Sounds to me like you're really unhappy with the gun.. If that's the case I wouldn't keep it because I'd always have that doubt about the gun in the back of my head.
As for choosing between a big cat or a G-1,,,, I'd go with the G-1. I say this because I have a G-1 and mine is a great shooter. I love that rifle.
Keep in mind though there are quite a few more guns out there to choose. Why are you limiting your selection to the big cat or the G-1 ?
I just got an email from Pyramydair.com that was advertising the new Ruger BlackHawk. It looks like an exact copy of the RWS 34 Panther, which is what I'm assuming they are trying to clone, and it's listed for $109 bucks including a 4x32 scope. Granted the scope is probably a piece of junk, but then again I have a couple of "combo" scopes that have been performing well for me for years. I'm toying with ordering one.
Do yourself a favor,,, spend some time looking at some of the myriad of rifles that are out there to choose from before you make another impulse buy. You can always go get a big cat or G-1 if you want,,, but there are alot of other options out there.
Don't know if my post helps you at all, but I hope it does......
Jeff