I like the quality feel of the product.  Metal and wood.  It seems as though it will hold up although the crank back down (once it's expanded) doesn't seem as definitive as it was during the first couple of uses.  The little toe bumps are adjustable although can be a bit of a chore to get off and on- watch your nails!  It has worked in open toe and closed toe shoes; both relatively flat and high heels.  I even put them in pointy shoes and although they did not go all the way to the end, they were fine where I needed (in the mid forefoot).  I wanted to try one out before getting another and based on my results I am ordering a second so I can stretch out both shoes in a pair at the same time.  FYI, I do not use liquid spray stretcher.