Which chuck?
Stephen,
Like KenM810, I have one of Ron's chucks (a fellow Buckeye) and like it.
There are a few things to consider. As Bud said, the CW chuck does not hold carbide shanks (CW says that no chuck does). The CW chuck requires sleeves on some bits that are not re-usable I believe (extra expense). The CW chuck is lighter (a little less wear?) The CW chuck requires two wrenches I think.
The Rock is heaver and longer (the length can cause problems if you chuck a long bit in wrong). The Rock tightens to all shanks (I've never had a problem). The Rock uses one hex wrench. If the bit has a flat spot machined into it and you position that flat spot incorrectly you might create a burr on the innards of the chuck that you would need to file off.
I hope that this helps.
Ken,
V-1, 2, & 3
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