Im looking to fit new speakers in the rear shelf of my MY93 WRX. Ive had 6x9s in there in the past and fitting is just too much grief.

What size fits easily and can anyone recommend something about £100 as I dont want to go too mental - ideally something which will sound as good as if not better than the 6x9s (JBL GTO 963).

Many Thanks

Richie