First, I'm new to the forum but have been reading for several years. Great site!
I'm a 15 off guy with elbow issues so take the review below from that perspective. I've been looking for Clincher type gloves to help with my elbow and recently ordered 2 pairs of Masterline Prolocks (Lg and XL) and 2 pairs of Radar Vices (XL and XXL). I chose the sizes based on the comments I read on this forum. I tested all 4 sets on the ski rope tied to the pole in my basement (remnant of winter) so I could return the ones I didn't like by not actually getting them wet (which may skew my review). So here's my take, and of course this is just one guy's perspective (forgive the length but I wanted to put down all the things that would have been helpful to me in making the decision):
Obviously very subjective. Vice if you like flashier, Prolock if you're more conservative (like me)
prolock material is a little more form fitting and less bulky which i prefer. it feels closer to a conventional glove than does the Vice which kind of feels like having snowboard gloves on. conversely, the Vice while bulky feels like it might be a litter more rugged.
very close in this category. however, the wrist strap of the Vice is a little more uncomfortable under load than the Prolock. HOWEVER, this actually has a purpose for reasons described below.
there have been several posts suggesting that the vice runs small and the fit isn't good for chubby short fingers. i didn't really notice much of a difference and the XL in both the Prolock and Vice fit well. the prolock might run a touch smaller than the vice but just barely. what I did notice with both gloves is that size is absolutely critical for a Clincher type of glove. it must fit snug and the middle two fingers must reach completely to the end of the glove or the dowel/strap mechanism is ineffective at redistributing the load to the wrist.
EASE OF PUTTING ON: Vice
both gloves are necessarily more cumbersome than conventional gloves due to the multiple strap system required to adequately redistribute force. that said, i found the Prolock more difficult to put on (especially the second glove) for two reasons: 1) the inner wrist velcro strap doesn't stay aligned as well as the Vice and you have to fish around for it, and 2) the Prolock main wrist strap is a double wrap making a littler more cumbersome than the Vice which has a single wrap.
FORCE REDISTRIBUTION/PREVENTION OF ELBOW PAIN: Vice
so this is where the rubber met the road for me and this is where my rope test was most helpful. with the Vice on one hand and the Prolock on the other (and vice versa), I loaded the line heavily with alternating hands. both gloves clearly transmitted some of the load to the wrist. however, the Vice seemed to do so better as when fully loaded I sensed minimal load at the elbow (medial epicondyle) and had no pain at all, either arm. the Prolock decreased the load but not to the extent of the Vice and I still had some elbow pain under full load.
i think the reason the Vice was superior lies in the wrist strap construction and location as compared with the Prolock. The Vice's wrist strap is wider and sits slightly higher up the arm and therefore load is better distributed to the arm bones (distal radius and ulna). as stated above, the Vice wrist strap is a bit more uncomfortable under load compared with the Prolock because of that redistribution. also, the web strap on the Vice anchors slightly more towards the radial/thumb side at the wrist than does the Prolock. I think this better maintains hand alignment (although others have commented that they dont like this orientation as much).
CONCLUSION: Both are great gloves with excellent construction and obviously there are some features that favor one glove over the other. Very close call but I bought the Vice. For me, the main issue was force redistribution/elbow pain and I found the Vice better in that regard. I strongly suggest you try both before buying as the differences are subtle but real.
Finally, to Horton, I completely understand if you need to delete this post because i've provided an unsolicited review that might be seen as favoring one product over another. and also because it might be the lengthiest document i've written since undergrad (priorities, right?!)!