Jeff, I too, started with a glove, and have switched back and forth several times. I'm back to a tab now. I like the "feel" of shooting with a glove, but the tab is where it's at for me now.
I don't think one is inherently better than the other. The reason I switched, is that the tab helps me use a deep, consistent hook on the string. I've been struggling with release issues since I started shooting again. I find with a glove, I tend to have more of an "L" shape with my fingers, vs. a good "J" with the tab. This may not be true for everyone, but it's working for me.
It does boil down to personal preference in most cases. If I ever get to the point where my entire shot sequence is burned forever into my little brain, I may go back to the glove. For now, the tab gives me the ability to concentrate on other parts of the shot sequence and not worry about my string hand/fingers.