Honestly I think mintpal is the best option. They have some of the highest volumes for the most active coins. I think they have a API that is currently in beta, hopefully it get released soon.

Damn. Also have you had any issues with trade amounts. I am always getting issues and the bot gets stuck. I tried all three settings and i get an invalid trade amount all the time. I also for somereason get "Reading fee percentage has failed, falling back to 10%.". This might be the cause as adding a 10% fee would throw off everything, when the real fee is like .15%.

My bot sometimes seems to stop tracking data from Cryptsy. The prices it was trying to use were hours old. Also what happens when the bots order gets burried by other orders. Does it cancel the order and reevaluate or does it just sit there hoping the price returns.