I chose the white wall mounts of K&M, because they are European built and one of the few which are nitrocellulose-friendly. Most of the others are not and are also very poorly built. I gave it four stars, mostly due to my anxiety that the movable handles can't handle (no pun intended) heavy guitars like a Heritage Golden Eagle. But it's purely my neurosis. I think eventually it works pretty well.
The looks are very nice, they are very sturdy and actually quite good in transparent-white. However, do not expect to use it for a banjo with long pegs at the back of the head. The handles are too short and have an angle downwards. I had to buy something different for my banjo. Luckily, the banjo does not have nitrocellulose lacquer.
So, five stars for me if the handles were non-movable or could be locked. I think however, they will do pretty well. I just wish they would make a nice floor stand as well (for guitar and banjo)...