I have had in the past 5 years a 9883, 9884, and a 9886 and am now running a Pioneer Premier deh980 BT. I can say without a doubt, I am done with Alpine unless I ever happen to come across an older model next time I'm in the market. The Pioneer with its built in tuning features have made a bigger difference in imaging, staging, and detail than I would have ever thought possible. My music has literally come to life, just by using the pre-set 'natural' EQ setting and the time alignment at the factory default settings for both front seating positions and without me doing any real tinkering.
The only thing worth buying in the Alpine line is the 9887, and IMHO even that doesn't really stand out above the higher end head units. Everything else in Alpine's new lineup pretty much a ho-hum CD player with IPOD control and bass/treble boosts until you pay an extra 150$$ for this, another 200$ for that. Alpine still isn't offering built-in bluetooth and has removed most of the important tuning features from EVERYTHING below the 9887 because they don't want people to get too satisfied with the head unit itself and leave IMPRINT units gathering dust on warehouse shelves.
OTOH This pioneer has built in bluetooth, optional IPOD compatability, 16 band EQ, time alignment, BBE sound, independent crossovers and slopes for front, rear, and subs. And unlike IMPRINT it has a built in Auto EQ setting that you can further tweak to your liking.
Im done with Alpine because I basically got tired of being told, 'OK you've already paid x-amount for the head unit, now if you want this feature 'unlocked' that'll be 150 bucks, this other piece you need is 30, this other thing is 199..." Come on, throw out some kind of bone, why should I have to pay 150 bucks or more for a whole 'add-on' module just to get a 5 band parametric or 7 band graphic on the 9886 when other manufacturers build 10 bands or more of equalization into more than one HU in their lineup.