For what it's worth, I have several Gamo break barrel air rifles and a Ruger impact max that are hard hitting .22 cal. nitro piston guns, my son has a couple of Gamo super X rifles in .177 and .22 cal. and a Beeman springer, on those guns we are running 2 Hawk advantage 2x7x32 AO scopes, 2 UTG Hunter 3x9x40 AO scopes, and I have a 3x9x32 AO UTG Bug Buster on the Ruger Impact which is a heavy recoiling rifle, all of those scopes have been holding up extremely well, and all are priced under $150.00.
As far as clarity goes both are pretty good with the Hawk scopes edging past the UTG scopes just a little, when it comes to durability under long term recoil I'd probably go with UTG, and UTG has a no questions asked I don't care what broke it Guarantee, Hawk is a bit less forgiving, but that said none of our Hawks or UTG scopes have given us any trouble.