i use a pismo as well, but running 9.2.2 (will upgrade to x later this year)
i use the midiman oxygen8, mostly with reason. as a professional, i find the 2 octave keyboard NOT a limit, because...i can take it anywhere. throw the pb, the kybd in a travel bag, and i can make music anywhere. i love this.
midiman has bigger keyboards as well; check out studiologic too.
within a month, there will be the ozone, identical to the oxygen8 but with an audio-to-midi capability: 2 inputs! just so u know...
have fun!