This is a newbie first post. Great website !

I want to replace my standard stereo on my 2006 Odyssey (EX-L). I have seen the piece on how to remove the stereo. The bit that I find daunting is what I replace it with, such that it looks good (as if it was designed for the vehicle in the first place, or close enough). I know that this is a tall order, but would be grateful if someone can give me some tips on where to look.

I am thinking of a touchscreen, hooked to a carputer. But what about the fit and finish ? Is there a professional body that can do this well ? If they are really expensive, are there any other options in terms of doing it myself?