I have a half inch version that I know is going to be a problem.The screws have worked loose a few times and it doesn't feel or sound right anymore.Especially if your ratcheting and you don't support the weight of the ratchet.If you have the ratchet horizontal and let the drive gear "****" a little bit it makes nasty noises and doesn't catch the next tooth properly.I would say it has something to do with the teeth being so fine that they won't mesh properly if slightly out of alignment.Time will tell.
Personally, I don't believe the route that any of these manufactures are following with regard to more and more tooth count is going to be a long term performer.
As Caper stated, as the teeth get finer and finer you will see more problems with teeth stripping out.
The only way I see it working long term is if they make the teeth deeper, or the whole head wider to allow thicker teeth in the head.
Or a new pawl design that engages more teeth in a 360' pattern, which would allow more torque being applied over a greater area which would negate the fine tooth count as being the weak link.
My view is that once you pass the 72 tooth count long term reliability becomes a issue.
I have noted many of the issues other members have indicated and strictly use the fine tooth ratchets for speed ratcheting and not for breaking loose bolts in the initial removal process.
But, hey that's probably why I haven't experienced the same failure as my colleges have in such a short period of time.
