The BXi 's are Brutus, just the last line. The BRZ's are the new Brutus line....You'll be fine if it's the brutus line. Their Hfi line is sketchy, and I wouldn't run the bxi line either. But you should be safe if you roll with the brutus
I wouldnt say the AQ is better . The AQ 1200d is the same amp as the hifonics bxi 16xxD's. It is a little under rated where the hifonics is a bit over rated but part for part they are the same amps. I think the AQ2200d is a clone of one of the hifonics as well. The 3500 is a different story though.how much power are you looking for? AQ is overall better but if you're on a budget just stick to the quart.