Great kit for the price if you ask me. Brenspeed doesn't leave anything out and is one of the best tuners around if you ask me. Its been on my perspective F.I. list for as long as I've thought about F.I...
Hellion has been around a while as well and knows there stuff. The only problem with the kit is that the down pipe runs under the k-member so it has the chance to scrape. From what I have heard from a few owners it doesnt' happen to often, but it happends. Especially if you have springs that lower your car more than an inch and a half in the front.
For the price I don't think you can beat it, but powerhouse makes a kit with the option for blow thru instead of draw thru. Some tuners say it is easier to tune and you can dump boost to atmosphere instead of re-circulating it. Also, with the powerhouse kit, the downpipe goes over the K-member so you don't have to worry about scraping.