Hmm...Price wise I would stick with the Eraser Pearl Particle.  The Pure Fuel is a high end retail ball.  So it really depends on what reaction you are looking for.  Both are very aggressive on the backend.  

If we compare

PF                                            EPP
RG 2.55                                       RG 2.53
DIFF .056                                     DIFF .050
Cover-pearl particle (different)              Cover-pearl particle
core - asymmetrical (stronger in the midlane) Core-symmetrical
MB located on ball for fine tunning

Overall similar balls, but you will see different backend reactions.  With the Pure Fuel suggested retail is $209.95 (depending on where you go) and you are definitely getting your money's worth out of this high performance bowling ball.  I have not thrown an EPP so about the best I can do is make comparisons for you.  I would check out some of the reviews on the EPP and give it a week or so for a few more review on the Pure Fuel and go from there.  Otherwise if you are still stumped on what to do please call me at the number in the above post for furuther information.

Thanks,

--------------------
Roger Noordhoek
Technical & Customer
Services Manager
Roto Grip, Inc.