I have leg and back injuries an the pain associated with both.  I've tried over 20 different brands of shoes over the past decade.  Nothing compares to the MBT for pain relief.  I can virtually walk all day pain-free in the MBT.  The Shuguli GTX s the least-offensive MBT to the eye.  It has a lower profile than the other MBT models and actually can be worn as a dress shoe.  I bought the model in both black and brown.  This is not the "best looking" shoe and it won't win any fashion awards, but it absolutely is by far the most comfortable shoe I've ever worn. This includes tennis shoes. This model also makes me approx. 1" taller!

As for the toning and weight loss the manufacturer alludes to - I've found the shoes help tone my legs and my weight has remained the same since wearing these and only these shoes.  Perhaps a more scientific study would warrant the manufacturer's claims?  It's difficult to notice any difference and I do question the MBT weight loss claim.

The one and only issue I have with this brand in general is less lateral support than other brands of shoes.  It's easy to roll your foot to the left or the right in these shoes if you are not careful.  Not a huge issue, however.  Just something to note as you get used to walking on this shoe.

I rate this 5 out of 5 even with the lateral support issue.  Highly recommend this to anyone with leg or back pain.