I do belive it's come up in the past and while there's no denying the MoTec stuff is cool it seems to be overkill for a motorcyle. Seems like most folks can build a huge horse short fuse motor without too much trouble as it sits.
Seems like they're pretty tight on price, what does a typical bike box for let's say a CBR compare to a PC?
All you need is the PCIII unless you want to do the tuning yourself. The PCIII doesn't come with an A/F sensor for tuning. It is a piggyback with direct plug and play. Almost everyone uses the PCIII because they don't know how to tune with the Motec unit. Plus the Motec needs to be mounted visibly. The PC doesn't. Once the bike is mapped correctly you shouldn't need to change it unless you're racing in Florida one day and Denver the next.
Another thing is the cost factor.
PCIII - $250
MoTec - $400+ (Depending on the accessories)
I agree with Dan. I really think the Motec is overkill for the bike.
Like Dan said, unless your getting into some serious racing I'd get the PC. You'll be very happy with it. Windows based interface and nice basic features. Make sure you get the slack out of your throttle cable before you reset your throttle position. If you bung all 4 headers you can use the cylinder trim feature when you get it mapped.