Power FC can control boost but u need to boost controller kit that you have to buy seperate, i think its about $400. Im pretty sure it uses the same solenoid etc as the AVCR cos i think APEXI only made one design. Some people i know don't recommend using powerfc as your ebc, not very reliable apparantly. Basically if the kit is $400+ you may as well buy an AVCR.
As far as performance issues between the three id also like to know. I can't justify spending $1500 for an AP Engineeering PowerFC so thats out of the question. I can get a chip for my ecu for $250 and the dude said if i give him my dyno graph then he can tune the chip perfectly, so i think ill end up going this way.
haha i didn't read the post before mine... he already explained it....