The first game I ever played was with my uncles hand me down pgp which I still have today. Even bought a back up from MaD so I can shelf the original for a while and put some time and money into it.
I have owned semi's, all low tech blowbacks (spyders and clones) and never had a problem out of them. Even in 20*F weather shooting Co2 with the proper set up.
I've actually got 4 BST tabs I've been keeping open and refreshing so I can pick up a semi when I get paid. Just to have something I can switch to and keep it fresh and fun, but I'll never give up using a pgp as a go-to primary.