As I mentioned in another thread, the difference between 2000W and 3000W, in addition to definitely needing electrical upgrades to run, is only 1.5dB, that's 1 click on a 1-35 volume knob. AND that's considering no compression and perfect world conditions. It's also the difference between those subs should be pretty bullet proof with 2KW to the 4 as opposed to you will be pushing them right to the limit at 3KW.
Your call though. If you buy Brazilian buy from a reputable dealer or buy 3rd party warranty. I'd take Brazilian over Chinese myself.