Let me preface this by saying, this is not a "tab is better than glove" topic... I know guys that will out shoot me day in and out with a glove. These threads that I post are just information on how and why I make decisions for my bowhunting applications.
Let's begin on how I prefer my tabs.
Size - I always start with the smallest tab that will fit my hands. I'll usually gage this by placing my three fingers together and using that as my guide to the "height" of the tab.
Cordovan - Slick release, tough, thick and pliable. So far, the material has been slick enough to where it hasn't affected my tuning. It's tough enough in which I'll end up losing the tab before actually having to replace it. It's just the right amount in thickness. I can shoot my desired bow weights and my back/shoulders will fatigue before my fingers/joints hurt. Finally it's pliable enough for it to fit well in my hands.
Customize - With any brand new tab, I remove certain things and trim to fit. For this tab, I removed the felt that goes between your pointer finger and nock and I also cut the rubber layer, because they end up cracking and breaking eventually. Then, I'll shave all the sharp edges as I tend to drag the tab on my face upon release. Those sharp edges have cut into my face after repeated shooting. Then, I'll every so carefully trim the cordovan and secondary layer. This takes time. I'll cut mine so that I get enough protection upon the release. If you cut it too short the string will nip the end of your fingertips.