The best overall SPAD? I guess that would depend on what you want to do with it. Personally, I like the SpadStik for general sport type flying. For sheer fun and crowd-wowing 3D type slow flying, I think it's the SPA3D - hands down.
All of this may change once I get the SPA3DT built. It is suppose to be the best of both worlds. If the new DT handles speed the way I understand it will and do the 3D stuff that the SPA3D does, well then, all bets would be off and I will stay with the SPA3DT.
But for right now, these are my votes.