Things I liked: small and compact, does a decent (not perfect) job of trapping pellets, came with a good supply of nice targets
Things I would have changed: make it stronger, put a lid of some type on top to keep the odd pellet from bouncing out (a rag works) Change the specs and instructions to reflect it's real strength.
What others should know: Do not use this with guns of significant power. My .177 1000fps shot through the back of it in 10 shots using standard weight lead pellets, all as specified in the instructions. I got my money back from Amazon. Bought another one from Pyramyd to use with a 600fps gun, which works fine.
Things I liked: This is a really solid and well made gun. It's pretty quiet and easy to cock and accurate. The trigger is very smooth and the cocking action is very smooth. It also has a simple and attractive stock. The recoil is minimal.
Things I would have changed: I did not care for the operation of the safety. It takes more effort than I would like to take the safety off and it is not terribly smooth. It's also pretty audible when taken off which could alert your target. Once the safety has been taken off, you must recock the gun and it will automatically reset, obviously this is more effort than simply sliding the safety back on.
What others should know: I think this gun is suitably sized for almost any adult but it is a little on the small end of the range, it works fine for me and I am 6 feet tall. It would be a great choice for smaller shooters.