Quoted from Mbecker:Cobrapin def. has a good price point, but the limitation is that if you need additional drivers or switches you need to buy another cobrapin board which I believe is more expensive than adding a multimorphic or FAST specific switch/driver board.
There is actually a satellite board that adds more switches, drivers, lights, etc. Only an additional 45. Main board is 175. Just got mine so can't really vouch for them yet.