This one, hands down.
Raimi set the bar high, loved the raised webbing, but never cared for the eyes. the suit from 2/3 was an improvement.
Really dug the Amazing Spider-Man suit, it looked great in that movie and I loved the different textures. Agree with what Stark said above regarding Amazing 2. Close, but no cigar. Mask was great, front spider looked weird sitting so low on the chest and the band around his waist was too large making the proportions a little funky. I would have loved for it to be more of a blend with the suit preceding it, instead of such a drastic 180. Also didn't like that they ripped off design elements from Raimi's.
This new one is practically ripped from the page, subtlety modernized, perfectly retro at the same time. Everything I could have hoped for really, everything we should have gotten nearly 15 years ago.