Not all of MB Quarts amps are good. If your not getting their Discus, Q series, or Onyx then its best to buy a different brand. How nice of an amp are you looking for or do you plan on ever upgrading speakers in the future? Another great brand often overlooked is Audioque.
This amp is very nice.
AQ4X90 Amplifier
yeah the pioneer is not a bad amplifier it just isnt a great choice especially if the price isnt really competitive just look around rockford fosgate just released a new piece i have seen it on the net for starting around 160 to about 269 an the size is very tiny it can fit in the dash or underneath one of the front seats so he really gets a stealthy look but a kick a** sound and it is very strong i plan on purchasing two of them for my ride when im ready to change my sounds but the speakers r perfect as far as the cross over built into the amplifier it is alwasy need due to the driver side of the components still need to set to play a certain level of sound so as too much bass do not ruin the speakers just a heads up which u probabl;y already kno