I've never been a big fan of custom exhausts, for 2 reasons.
1. I don't think any shops in Calgary can do mandrel bends, cuz most likely you'll get crush bends. So what's the point? Crush bends = loss of power.
2. You get what you pay for. Call me crazy but I went with a Greddy for my car. Sure it costs more, but I know the quality is top-notch, and it's mandrel bent.