I put together a Martec Super Bike (inexpensive frame) which is made by the same manufacturer. According to Chuck at chucksbikes.com the BP is cured differently so it is slightly lighter. Pedal Force and EPX have the same frames in different colors if that matters.
I have only been on the road once with it but so far so good. It was 40 miles on the Santa Ana river trail which is flat so I cannot attest to the weight factor yet.
I am planning on doing the Fiesta Island TT in February if you would like to check it out. It has a 56 TT and 12 HT.
-Greg
http://www.chucksbikes.com/fr024.htm