These guys are the best valued exhaust guys in the area and they are a professional but family owned and run business.
I recently had to replace my exhaust on my 2000 Subaru Forester GT and thought I'd upgrade to a sports exhaust (without knowing what this meant!). Although the exhaust they fitted, was well within the specification I gave them, spectacular sounding and looking, and importantly much cheaper than all other quotes, and even significantly increased power, it was a little too loud for my newborn baby and wife. So I took it back and they re-fitted a more suitable muffler at cost price.
I would recommend this to everyone despite my naive mistake.