If you want any form of decent sniper rifle, go for a higher end one.
Maruzen do arguable the best L96, TM do the best M700 based rifle. (Yes, I'm not even going to suggest the TM L96, because it isn't worth it! It's the same as the Maruzen, but you're sacrificing performance for the correct mag placement, and if that mattered that much you'd get a Tanaka L96 anyway!)
The Maruzen being the APS Type 96, the TM being the VSR. The feel and build quality of the high end bolt action rifles are superior in every way to any clone rifle.
Those both being spring, they're arguable the top of their respective categories, however if you wanted to get into a more realistic sniping experience some would say a gas bolt action is the route to take. I'd agree, and the KJW M700 is a fantastic rifle, it's got the FPS you'd need (plus a way to adjust it, if only by a little) and even though the stock barrel and hop rubber are... rubbish, they're VSR compatible. You can stick a VSR barrel and bucking into a KJW M700 and they're going to fit fine. It also takes any nub you care to try, H-nub, SCS or otherwise.
Otherwise, with gas bolt actions you're going to be spending alot more money than with the VSR or Type 96 to get similar performance.
In other words, don't go for the Well/Warrior/HFC/Rubbish low end brands if you're in any way serious about sniping, because even after upgrades if you polish a turd, it's still a turd.
