Sorry that I never answered your direct question, I guess the lowlife wolf who doesn't have a life took the attention. I don't know Becker and haven't heard of multiple succesful cases of him, like I have with dr. Giotikas, maybe search the forum, to see if you can find any. Dr G is cheaper and offers G-nail which is pretty much the same thing as Betzbone that allows you so weightbear. I have heard tho that some patients have easier time clicking with Betzbone, but maybe it's a individual thing.
Either way I think I'm personally sticking with precice even tho it ain't weightbearing, for these reasons:
1. it's fda approved and used all over the world, which isn't the case for the other nails mentioned.
2. They have the reverse future if a non union should happen (unlikely in the femur, but still).
3. According to dr. G the pain level with doing G-nail /betzbone is about 30% higher than with precice (the surgery is already painful with precice...)
4. Precice is cheaper and according to most surgeons like mahbouhian, Dr lee, etc better...
5. the lengthening mechanism is wireless and magnetic which makes it alot easier with precice than clicking with Gnail /betzbone which can be troublesome according to many diarys on this forum.