Mackie amps

[zapper]

I am considering doing a IB setup, have a gazillion questions, but will start with the amps.
I have 1 Mackie FR-800 and 2 Mackie FR-1400 amps. Their 4 ohm output is 300w and 450w stereo respectively.
Has anyone had good or bad experience with these?
I can run the FR-1400 bridged for the most power, 1400w @ ohms, if required.
I am guessing I will be using (4) 15" drivers, but that is another question.

My room is high end dedicated 100 amp panel, blah, blah, blah

Thanks Guys

[ThomasW]

With the expection of very high-end amps, watts are watts. And for a sub virtually any 'watts' are fine