I cannot speak to the collection bag as I did not use it. I have a mulch pile on the back of my property so I just set the machine near the mulch pile and let the machine discharge directly onto the pile. The machine is easy to maneuver from barn to this location. This also makes the mulching process faster.
The only negative that I experienced was the cover on the chute. It broke immediately while trying to install it on the machine. Lucky that I find I do not need it to operate the machine as I do.
Another plus is that I have run the machine almost three hours of heavy workload on one tank of gas. It operates efficiently and saves time without having to stop your work to refill the tank.