which one should i get, kdc-x592 or deh-p6000ub?

kdc-x592 or deh-p6000ub here is what i have now: idax200 mrp-m500 12" alpine type-r rf punch 240x4 6022i's sps-69c3's rfc1d the main reason i want a new headunit is because i cant separate my sub volume and highs where i want it to be. when i set my bandwidth at 4 and set my center frequency at 200; my sub is loud and nice at this setting but the highs dont sound so good. but when i set the frequency at 60/80, my highs sound great and clear but my sub isnt loud enough. so which deck you think will do the job or solve my problem? would a Clarion EQS746 solve me problem? thanks.

would a Clarion EQS746 solve me problem? thanks. Yes that would be the way to go Use any EQ/Xover with a good brand name

"Yes that would be the way to go Use any EQ/Xover with a good brand name" so get the EQS746 and a x-over? would i be good with just the EQ746?

what kind of alpine headunit then? model?