I couldn't agree more. I just finished my exhaust set-up using the GarageLine Mid/X-Pipe combo. I had originally installed the GTHaus Axleback while my exhaust was stock, and then ended up adding Berk HFCs to it. I was extremely happy with the sound, but knew down the road, I wanted a tune. So then I began my search for a Mid Pipe and Y Pipe that would fit between my HFCs and Axleback. Then I stumbled upon GarageLine's combo... those guys are easy to talk to and are willing to work with you. The price was cheap, and the shipping was quick. I am in the process of making an exhaust complication of my set-up, so everyone can hear it and compare it. This exhaust combo from GarageLine, made my car sound like a monster. You will not be disappointed with their products. Here's a quick YouTube video shot from an iPhone.
Loud 370z Drive-by - YouTube