Honestly, it's tough to make a positive comment here considering the sticky at the top of the forum. But I'll give it a try.
The design, strength adjustability and durability of these products are great. However most street drivin' stangs will never see the full potential of that kind of suspension. The biggest differences are in the little changes like the shelby drop, tighter springs and sway bars, etc.
Then there are those who have the money and just want the best product available. The weakness in the design as mentioned in the sticky is really the car, but you can't deny any short sightedness... It sure can be fustrating!