I'd take either deck. I just bought the Kenwood X889 and will say with out a doubt its the nicest deck I have ever used. I have friends with Alpines and pioneers and I'd take this X889 over any of them. Don't listen to those that say Kenwood isn't the real deal. they are. but Eclipse make a fine deck as well.
sq , tons of options, features quality finish and a great clearance price to boot. You just can't go wrong with Kenwood.
I wouldn't buy their speakers but their hu's are fantastic. Atleast the excelon decks anyway.