Depends on your aims.
Do you want a fun AEG to play with and use it like an assault rifle? If your answer is yes, the Cyma will do a good job.
Do you want a very accurate rifle that is one shot, one hit, that can also double as a sniper rifle? If your answer is yes, get a Tokyo Marui. It's by *far* the most accurate M14 on the market.
As for the G&G and the Classic army, they are the same. Classic Army cloned G&G. They are decent M14 by all means, but they have proprietary gearboxes and use proprietary, expensive mags. No one will really recommend those because of that.
Keep quiet. Sound travels faster than BBs.
Québec province's master age verification representative.