An old Churchill pair from the 70s and the new blue/yellow ones. These are my favorite fins. Just make sure you get the right size so that they don't kill your feet. The BZs I didn't have long, they were when I was a kid and my feet were growing fast. They were OK at best.
I've worn my friends Body Gloves with the neoprene liner and adjustable strap. They are extremely comfortable. However, I feel they lack a lot in power, because of the neoprene the boot part isn't that stiff, so it flexes a lot when you kick. Unlike the Churchill's which is why they have a lot of power.