Definitely let me know how it turns out - I've heard a lot of negative regarding the new Alpine lineup, but on paper at least the 9857 seems like a competent deck.
I never thought I'd buy Pioneer honestly (only had Eclipse in the 'ho), but the 880 is amazing. 24 bit Burr Brown DAC, 32 band EQ/Auto EQ (mic), network setting (3 way active capability), 5V preamp out, etc. And it's boo-ti-ful as well.