Man, I just got a brand new MB Quart Onyx 1.1500D. Wish I could give you a review, but I haven't been able to run it yet. I've been trouble shooting my system. (might be something wrong in the HU, RCA area). I would say these three are pretty much on the same level. I know some don't like the AQ's quality. Some ding MB Quarts cause their Maxxsonic now and not their older German counterparts, but the newer Onyx line looks promising. Most thing being the same, I went with MB Quart cause of the 2 guage inputs, output wattage(500,1000,1500), and they are kinda sexy lookin. I'm running 2-12" sub right now, and plan on switching over to one higher wattage 10".
Think I got mine for $210 on
ebay...