Either of the first two planet audio's i would take, but im getting two of the rxd2400's myself.
I own one of the AP15001D's..Theyre definitly good amps for the price IMO.. Ive ran two strapped @ 1 ohm (.5 per amp) and ran it down to 10volts at a comp and both amps are still working fine, dont run them under 1 ohm every day tho but if you need 1500rms get the audiopipe for budget friendly..