Which one to buy?

Hi All,
My son wants a sniper rifle for b-day/Christmas. He's going to be 13 and isn't too picky about which one but has sent me images of the Well MB08. In short he'd like something in that "style." Since I want it to be a good gun, do what it's supposed to do well, and last I started looking around and came up with a few options. Was wondering if you guys had an opinion on any of these.

Well MB08
MetalTac MB06 SR-2
Bolt Action BT L-96
Bravo Full Metal MK98

I'm looking to stay under $200 (as you can see by my choices), will need a scope, and he won't be modding it, at least for a while.

Any help is appreciated! Thank you.