Of the choices available here's what I know.....
Grip Loc....by far the simplest and least expensive to install. the only downfall is the grooves cut into the inner to align the slug cause the walls to get thin if you need to "adjust" the hole in the slug, I have an inner sleeve that I have used for 2 years and it's just getting loose
Turbo Switch Grip....Easier and simpler to install than the IT but not as simple as the GripLoc, downfalls...had a history of breaking the locking tabs, still are suspect from what I know, requires the use of a huge hole in the ball.
Vise-IT....the best and most solid of the bunch, a bit more complicated to install at first from what I have seen online but is quite easy once you learn the process, multiple sizes of slugs available for use, , uses non-standard drill bit sizes, reasonably priced components.
I personally use the Grip Loc since it is the most cost effective for my small operation but I want to try the Vise system....maybe profits will allow it in a month or so...
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Doug Sterner
Doug's Pro Shop
Owego, NY
http://dougsproshop@aol.com
www.dougsproshop.net
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