I purchased this to gain some experience with the 4-valve on top format, to aid in dexterity of my fingers, and to have a different horn to practice with because I am between buildings a lot! The price was excellent on this horn--being even less than the 3-valve version by the same brand at the time of purchasing. I have been looking at this product for a while, and I could not believe the sale that it was on!
It is important to note that the video was recorded using the standard camera on a Macbook Air. I also only have around a year of experience. While my primary horn is easier to play, a similar recording did not sound different from primary to this horn. It took a few days to break in and get used to. At first, high notes on this horn did not sound well, and you can hear me hitting the middle D/E without a problem in the video. I can hit as high as the F/G at the moment (Just above the top note on the staff for treble clef and middle note above bass clef.). The only problems at the moment is that the slides are very stiff and the water keys do not adequately drain the condensation. While they may break in some, they are so stiff that I do not think they will be as smooth as I would expect. They are already greased from the factory. Every Euphonium has trouble with water keys, but the slides are normally smooth and easily accessible to mitigate that problem. For the value, this product is excellent. It is perfect for a school student, hobbyist, or person who needs a road instrument.