Bo1972, I wouldn't bother with the review. Most of us have tried them already and many have gone on to the Ultra Fives.
Kennyb, yours was a very interesting post. I have done this only once. This was on a StillPoints Rack with their Grids instead of shelves. I removed the SSs from under a cd player and substituded Ultra Minis. Because the SSs often lock up as you tighten them to assure that all four are in contact, I suspect that the Minis, which were the victor in this instance, were the result of them not locking up.
I have always found four Ultra are much better than three.