Hi.
Please, please, please get the jg. The TM version is I waste of money! Period! The only part which is better are the sling mounts. They are very cheap if you are desperate.
Is difficult to quickly explain here as there is a ton of information on why, but I suggest you google the airsoft sniper forum and read the stickies on there before you dive in. There is tons of very scientific reasoning behind what mods etc to do and what not to do (I.e. don't get a 6.01 barrel)
I know my way around the vsr platforms pretty well after years of stripping it down and fettling it so feel free to pm me if you need a hand
Bullet