I think the newest ones are of very good quality, they are also mag driven.
So if something gets lodged in them, they do not need a shaft replaced.
Ive been looking at them for a while now, but i await Paul`s answer to a few questions regarding a sort of custom one/two before i take the plunge.
Theres a forum on his website, if you have any questions about applications that i found very helpful.
Expensive little riggins tho...

, then again, what in this hobby isnt ?
NewGuy, i did also read in that forum that a few guys have upgraded their old versions for a very reasonable cost...might be something you could look into.
Marc.