GreekDiver
Have you ever try any of the C4's ?
Your post was great, comparing fins is one of the best ways to find what you want (in my opnion), since it is almost impossible to try a fin without buying. I went with the hybrids because of Marwan post and based on what I read about it also I've try the blue water special and was very impressed. But something is always needs to give, you get a more durable fin with the kevlar but is not as good as the carbon, that is what've learn with your post.
I've bought the Bat early this year, it is a very good fin for surface and long distances, but I think I've lost bottom time on deep dives, I've also felt them long , I was always hitting something at the bottom and spoking the fish, the rekord look to be as long as the bat, but you've got me thinking about buying a pair.