Oh, I didn't really have any plans, just thinking out loud. I'm just getting back into car stereos after being out of it for more than 15 years. I feel like things haven't changed much, heck, Soundstream is still making the Reference series amps
I'm using the Alpine Imprint processor in my car right now. I bought a couple of Rockford Fosgate PBR300 4 channel amps (because of the small size) and I'm not really impressed with them. I have a couple Hifonics amps, but I wasn't using them because I was trying to not use a lot of space (hatchback car), I guess I'll swap them in and see if it sounds better.
The Alpine Imprint is notorious for being difficult to work with in a car. A lot of people are left unsatisfied - but you should check out the 'Imprint Tuning Tips' thread somewhere on these forums - a lot of good info there for getting the most out of that processor. Short story is - the algorhythms used get thrown off by sub frequencies (20-50). It seems everyone suggests shutting off your sub or turning the gain WAAY down and letting it tune only your midbass-treble range. Then manually set crossovers for the sub/midbass blend. Otherwise it tends to mute the bass/midbass frequencies quite a bit.
Posting from work, so need this disclaimer:
"The views expressed here are mine and do not reflect the official opinion of my employer or the organization through which the Internet was accessed."
Yeah, I've run through the setup several times, and I've had experience with Audyssey in the home theater realm. It tries to create a fairly flat frequency response, and that doesn't always sound very good to people - everyone tends to prefer a little extra bass. I just installed it last weekend, so I still have a lot of tweaking to do.