I'm based just outside Bognor Regis if you want a passnger ride in a resonated system.
I have 3 kids and the resonated is perfect for me, enough noise to sound sporty, but not too much to get on your tits. Had it on for 8000 miles and love it. It is about my fourth milltek exhaust on various cars(I am a milltek dealer if you want a good price) and I've always gone resonated, bar the RS4, but I changed that after two days as it was too loud, resonated just works better for my situation. If I was youngr, no kids etc, no doubt I've have the non-res.
I would strongly recommend you have a ride with both systems before you buy.