Both products are high quality and have earned their status as premium level components and I doubt you`d go wrong with either. I`ve had the BPT BP-3.5 Signature plus for just over 4 years. It is superb and increased the sound quality across the board for all of my components(yes also the power amplifiers)dynamics are improved with the BPT in use. My unit has 20 amp capacity(probably overkill for my system).In my use I`ve found no negatives or compromised trade offs.Balanced AC power is the way to go IMO.
Regards,