Adata Premier Pro Pro SP900 128 GB 2.5" Solid State Drive - Black - SATA/600 550read/520write for $115 or Kingston SSDNow V300 SV300S3N7A/120G SATA III 450Read/450write for $109 or an intel 520 seris 120gb used bought back in Nov for $95 and the big question is will there be any improvement to BF3 multiplayer over my WD 1tb black sata3 6gb/sec beside loading time each round as in any diff in the game play like fps or ping latency.

I would hope there's be an improvement in everything. (Don't forget the fnacycache now that you got gobs o ram!)

So which ssd is the best bet? My guess is spend an extra 6 bucks for 8 more gigs of ssd and get the adata

I only know my OCZ, and personally I'd get a 240GB drive.

if you're concerned about that 8GB then just got for a 240GB drive. a once and done is more economical than getting a 120GB drive due to budget and then realizing 2 months later that you'll be getting a 240GB drive anyway.
the only SSD i've used is the Corsair Force 3 (i have two of them). I kinda wish i'd have sprung for the few extra $$ and gotten for Corsair Force GT instead.