Actually the gto2 was a good bang for the buck until greedy a$$ retailers like *cough* suckegg started charging $300 for it. I was gonna order one from atacom for ~$230, but those are even worse - they dont have em in stock, but they still sell it online like they have it.
Right now I have a c3d x800gto on order - costs $179 and also has a pretty high chance of unlocking to 16 pipes, but it's not guaranteed. I'll post my results when I get it.