For one that memphis does draw a hefty current, second the Kicker pulls more because it outs out more, and third the kicker also developes the most power at 1 ohm.if you want just raw power then choose the kicker but it does use a larger current draw. i have a memphis 1000 and the cuttent draw is less if any at all and i have a 01 sentra. the mem. amp is compact and does not take alot input power to make get down and dirty on some subs. but you have to run it at 1ohm. personally i would choose the memphis but if you have larger area and good power then the kicker will get down too.