Power Acoustik BAMF-2000/1D (bamf20001d) 2000W Max, Class D
I know, I know. Power Acoustik isn't a top of the line brand for some, but I have this amp, and it is for all intents and purposes, perfect. Granted, I personally have not run them in a 1 ohm setup (I had 2 12" JL 12W3v3's @ 2 ohm ea, 1k RMS), but there are several reviews saying they work fine. I had this setup in my 4Runner for over a year now, and nothing went wrong. Amp stayed cool, and ran good.
The only annoyance I have with it is that it made an audible "click" on head unit turn on - but I quickly got used to it, and never noticed it again.
EDIT: I didn't notice you also said you could live with a 4 ohm setup - in that case, I have no doubts on this amp working out well.