I am an avid hiker, camper, and wilderness backpacker and regularly organize camping events for as many as 45 participants. My family also will be growing to 4 (with a potential for a 5th coming in the near future), and so I wanted a larger tent to house two families comfortably with up to 10 members (4-6 of whom would be adults.) Tents I have purchased in the past were made by Sierra Designs, Big Agnes, MSR, REI, Columbia, and less expensive ones like Coleman, depending on the purpose of the trip.The CORE 9 Extended Dome tent is one of my favorite, family-sized ones (although it has a few issues, such as a door that's mildly difficult to operate and a slight lack of ventilation for the hot summer days), and I was excited to purchase the CORE 11 Cabin Tent with Screen Room. Why? The ability to have the screen room allow for air to cool the main cabin, and for the kids to enjoy lounging safely away from mosquitoes. I was EXCITED! Alas, I ended returning the tent for a few reasons.PROS- Very large capacity (can hold up to 9 or 10 adults comfortably)- Separate screen room whose mesh panels can be zipped closed, instantly turning that section into its own sleeping quarters- Screen room keeps the bugs out while letting air circulate through the warmer main cabin- Screen room has a full tent floor- Plenty of air ventilation for both the screen room (obviously) and the main cabin (which has a panoramic, mesh ceiling). Absolutely LOVED how the air flowed throughout!- Mostly easy to set up, though the main poles required some force to lock into place (I set up the tent by myself)- Excellent color design- Adjustable vents for the main cabin- Water resistant (though I did not get a chance to test that)- Generously-sized carry bag. I do not remember seeing that mine was expandable as described in the product listing on Amazon- Electrical access port for RV campers- Bright-orange guy lines for increased visibility (ever tripped on those at night before?)- Gear loft with lantern hooks, although it'll be quite high up for shorter people to reach- Very generous height (up to 7'), allowing most occupants to stand straight up- Multiple pockets in the main cabin and screen room that are higher off the ground for easier reach- Can fit up to 3 queen-sized air mattresses (2 in the main cabin and 1 in the screen room)- Thoughtful design: poles are color-coded, the loops where the poles meet the bottom of the tent (and stakes are secured through) make it easier for the poles to be attached (PHOTO A), and the plastic where the poles meet comes with its own carry pouch to help minimize damage to the tent fabric (PHOTO B)- Rain fly to keep rain out- Fairly quick disassemblyCONS- Heavy at 43 lbs- Bottom of tent is not lined like a bath tub to keep rain water out- Footprint not included (most tents don't). If you get one, be sure it is not larger than the tent itself so water won't pool up- No separate entrance to the main cabin without having to go through the screen room, making it less convenient to be used as two, separate sleeping quarters- No separation wall for the main cabin to split it into 2 "rooms" (which would also require 2 doors opposite the screen room)- VERY large tent may not fit some camp sites- A piece of the fabric EASILY tore when I pulled one of the stakes out (where the center of the screen room door is - see PHOTO C). Lesson learned: don't pull by the tent, but by the black loop instead. This gives me great concern about the durability of the rest of the tent where the stakes are staked through. None of my other tents ripped like this by pulling the way I didTIPS- Keep the footprint smaller than the size of the tent to keep the rain water from pooling- Ensure the tent is not twisted where the stakes are. A twisted area can help rain water enter the tent- When putting away the poles, take them apart from the center out to help ensure the elastic band does not overstretch over time- When putting the poles through the designated areas of the tent, PUSH them through instead of pulling. Makes assembly/disassembly much easier and faster- To easily fold the tent away, this technique has worked with practically every tent I have owned: the folded poles' length are usually the same size as the carry bag (PHOTO D). With that in mind, I use the folded poles to roll the tent up (see PHOTO E). Once folded, the tent should fit easily into the carry bag (PHOTO F). I learned this technique after having struggled with the Sierra Design tent whose carry bag was not very easy to pack withFINAL THOUGHTSOverall, I really love the generous size and air ventilation of the tent. The ability to have air circulate throughout the main cabin was one of the major reasons I was so excited to buy it, and the screen room was a very welcome feature. However, after a very painful decision process and discussion with my wife, we ultimately decided to return it for the following reasons:- It may be too big for most camp sites we go to. We would hate to be stuck at a site that would not allow the tent to fit- The tent easily ripped at the tent floor/tent junction when I removed a stake from the soft ground by pulling on the tent. This gave us a big concern about the durability of the fabric- No separate entrance to the main cabin without going through the screen roomThe CORE 10 Instant Cabin with Screen Room may be a better compromise between this CORE 11 and the CORE 9 I already own, but I cannot justify the price the CORE 10 commands. If the company can create a smaller version of the non-instant CORE 11 or CORE 9 with a screen room big enough to house perhaps 2 chairs (but most importantly, allowing air to circulate the main cabin via said room), I would seriously consider getting it. Even better, including a room divider with separate main cabin doors, and that would become my perfect, family-sized tent. One can wish!For now, the CORE 9 Extended Dome will have to do.