I've never had a problem with Kenwood decks. Mine has front and rear RCA pre-outs, and a separate set of RCA pre-outs for the sub which can then be controlled from the deck with different settings. It's a KDC-X579. Good luck with the new setup.
Gotta keep on livin', L-I-V-I-N
Pioneer DEH-6900UB is at the same pricepoint, and Pioneer makes a decent headunit. Just another option, but if you're partial to Clarion then I'd say to stick with it.