Pros: lots of power if hooked up to the right stuff.
Cons: you need a capacitor to save your alternators life.
I have owned a MTX 81000 since it was new.It will drain a lot of power at 2ohms butt will not kill your alternator if you are running dual voice coils and run them in series.It sounds great in my blazer.I have the 18000d, two power HX2's and a 1 farad audio sound labs digital readout capacitor (that helps a lot to).Will never buy another amp again. Never have had a problem with it. But over time i lost 1 leg from the amp and broke the bass control that hooks to the dash. Plus i only paid $250 for mine i have family that works at MTX.