Everyone on here seems to think the btm system is the greatest exhaust ever made so chances are everyone will recommend that and that's what you'll buy.
I've had a piper cat back exhaust on my 182 for around 18 months now and I use my car for a mixture of motorway driving, driving around town and back road driving because I live in the sticks.
On idle it's got a lovely note to it and gives the car a sense of occasion when you fire it up.
Around town it's pretty civilised and nice a quiet.
On the motorway it's pretty much the perfect exhaust, at 60-70 it's silent and I mean exactly like standard which is exactly what you want. At 80 you can start to hear it but it's not a drone it's just because the revs are starting to get a bit high as you'd expect. Any faster than that road and wind noise take over and you can't hear it at all.
On the back roads when giving it some stick it really comes into its own and makes a lovely sound. It also sounds great when blipping the throttle on downshifts, get the occasional pop and gargle when it's nice and hot too.
Me and a friend fitted the exhaust on his drive way and it couldn't be easier.
I think the quality of the welds is very good and overall I'd recommend it. I use powerflex mounts and I don't suffer from the same problem
@scooby-93 suffers from. My exhaust sits level.
I personally don't like the way you can see the btm back box from the back of the car and the piper is also considerably cheaper.
Piper comes highly recommended.