I've converted to Turbo 2n1 since August & love it. I haven't had any parts break or wear out and the benefits of having the same fit & feel in every ball I've converted is a godsend. I'm gradually going back to my older equipment and having them retrofitted with the outer sleeve and my pro shop driller only charges me $12 for the installation & drilling. If you go ahead with converting your equipment to the interchangeable thumb inserts, have your shop make 2 inserts one that fits your thumb size when it swells up for humdity, etc. and one for when your thumb shrinks a bit in size.
Haven't tried the VISE system, but it looks real good. My pro shop only carries the Turbo system so I go with what they have. I think Lane1 also offers the Grip-Loc system and that looks like another excellent option. I just don't know how easy it would be to find a pro shop who sells & installs their system.
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Spence Hayashi