Ahh, a lot of those cheaper amps that say 2500w end up only putting out about 20% of what they claim. Not that there's really anything wrong with that especially for the price. What I'm getting at is a budget 2500w amp might put out the same power to a more expensive amp. The difference in the high quality amp is that they typically produce cleaner power and have built in features to reduce distortion, over heating, and create maximum SPL without sacrificing SQ.
Not saying there's anything wrong with your setup I just have different goals I guess.