Shambopyro,
Plenty of people have had good luck with the package. I had to work on mine quite a bit BUT once I got it sorted out I was really impressed with the power it developed. When you get it, you may see some rubbing on the inside of the duct (they say thats normal). My unit may have been the exception as my fan was rubbing on the duct when I turned it by hand - If you get one like that I wouldn't mess with it - just exchange it and get a new one, you'll save yourself alot of frustration. I did get quite an education with mine though!
Robin