cant seem to get a straight answer, i want to have the choice of loads of
music in my car, i don't want to use an adaptor because of sound quality ,
I'm ok with wiring and that sort of thing so am happy to put in something a
little tricky. don't want to spend a fortune, but can spend more on some
thing decent, atm prob looking to spend between 100 and 200 gbp.

what are my optiions?
cheers.