Put mine in this weekend, thing is a beast. Vast improvement over any Alpine or previous Pioneer deck I've owned. Thing gets super loud (actually puts out 5v unlike cheaper '4v' Pioneer decks that really do 3) and is immensely crisp. Completely different sound stage now, and the built in auto-time alignment is a champ as well.
Well worth being had at anything ~$350 new. Great new age replacement to some of the better known SQ decks of the early 2000s. Haven't touched the bluetooth yet, will try to work on it weekend after Easter.