From your choices my first choice would be the AQ, then FI only because Audiopulse really is no longer a company. Sorry for maybe having to settle for a Kicker 2500, ouch. Get the Sundown and do not even consider the Kicker. The Kicker really should be a Kicker 2000, lol. Look into Treo SSXs, they will laugh at 3000 rms.