Everyone will have personal opinions on exhausts and like different things.
I've got a Milltek resonated cat back and it's spot on. Not too loud when pottering about but you can tell it's there, gives off a few cheeky pops and burbles on the gear changes. Really comes alive when you hit the loud pedal and after 5krpm it's a very nice sound but not too in your face and won't scare the local wildlife off.
Again it depends what you want, if you want louder then go for a non-resonated system. For me I think it would be a bit much but then I've always gone with resonated exhausts, I don't like the tinny/farty sound you can get from taking the box out of the middle on most systems.