Best brand of M14

Hey forum, I'm in the market for an M14 that I can convert into a sniper (not an EBR, just a normal sniper), could you guys please post some ideas related to these 3 criteria:

1) $$$ Stock Price: Up to $150 (but if you find something close to this price, but above it, feel free to show me).
2) Upgrade-abilty: Which M14 can take the most upgrades/ after market parts
3) Realism: I'm mean ,hey, real steal (or real wood in this case) is prefered, but not extremely important.

This is what i found so far that interested me.

Convert an M14 into a sniper? Why convert a rifle into a person? (JK, it's called a sniper rifle. The sniper is the person who uses the sniper rifle )

The CYMA M14 would be a very good choice.

G&G M14's are very sweet. then again, TM offers a great building platform, and is already outstanding Stock.