SCN101,
I completely agree. I looked hard at them before buying the Soupy's and I have to say the Soupy's install was a bit concerning as you do need to get the lengths exactly right and it is very hard, if not impossible, to adjust once you start the install, without starting over. I think the Roaring Toyz would be much easier, but I found an article someone here (jskene) had written and it seemed to make it easier, but not a slam dunk.
If I had to do it over, I'd go with the Roaring Toyz, but that's just me. Soupy's has sold a ton over the years and they stay popular for a reason.