I'm currently using my first pair of fins the atomic aquatic splits
Good lord and you're still alive!
Some strips of gaffer tape will fix these splits
All joking aside, I'm a +1 on Mares Quattro fins and probably used them for most of my diving until I discovered Hollis F2s.
My daughter bought them first to replace her really old fins, but as you may find out later, when you change dive boots sometimes the fins don't fit anymore.
Go to your LDS and find out if they will lend you what they sell and try them out, not in a pool, in the sea under conditions that you normally dive it, or borrow some from friends to try.
I'd sell you my Mares fins if you lived closer as I have a brand new pair of yellow Mares Excel Plus only used once when I bought my new drysuit 3 years ago.
When you do find new fins that you like, make sure they have spring straps too, you'll wonder why you put up with all that flaffing around with clips n stuff.