Colin is a straight up guy and gives nothing short of his honest opinion. You can Email him directly from the website if you want more detail.I think he did a good job of price performance evaluation. Since I have just made my cuts and have glued sides and bottoms and starting on baffles I also am impressed with the simple beauty of the 2 pi. And I do not expect it to match my favoritism for horns - that will be a future project.
Cheers