??!!What is the best head unit!!??

I need to know what the best head unit is that I can put in my prelude. I want something that will at least control a dvd player but preferably plays them. It does not have to have a screen built in. Needs to have good audio adjustments and play cd/cdrw/mp3. it would be nice if it could use xm or sirius and be able to add tv tuner and maybe navigation.
I have clarion VRX-935vd now but the dolby digital 5.1 surround sound processor is seperate and in order to have the subs sound right the front speakers have to be set with low frequency so you can really hear them. Unless you know how to tune the 5.1 so that the speaker and subs can be set on different frequencies I would like to know what else i can get.

the deck you have know is good enough, just save your money and get a cheap car dvd player and put it under your passanger seat, or in the glove box.

Yeah, what he said... ^^^^^^^

I don't think a head unit exists with those features. Alpine just came out with a unit that can read mp3s off DVDs and control an iPod, but I don't think anything that doesn't have a big screen in it can control a navigation system/DVD player.

Anything from Alpine or Eclipse is usually considered the best. Clarion pioneer (not the bottom of the line shit) and panasonic are good brands too. I'd stay away from Kenwood Sony and the cheap brands.

this clarion already plays dvds and has the motorized touch screen. i guess i just need to know how to make it sound good. i can seem to tune the subs seperately from the coax speakers