If you go for the non-res you can always buy the resonated pipe as an extra if your not keen on the non-res sound, my non-res is fine. Does make more sound when you have more power

I dont feel you'll beat Milltek so why look anywhere else

I've seen it tried before and nobody was happy so my thoughts were stick with what you know.
Also when I told my mate I had a new exhaust he just assumed it was a Milltek without me saying, same when I told the insurance - obviously a good reputation.