Trinigordo:I am wondering why 9 people so far, have absolutely no desire to see the otherside. How can you know which you prefer without trying both?
Me personally I fell in love with Apollo Bio-Fins, and I don't think I will ever switch them for another fin. I find them extremely comfortable and more efficient than any other fin I have used.
Open heel spilt fins tend to be pretty expensive. Full foots are much less expensive as are used Jets on ebay. Speaking of Jets, you can sell them on ebay for the same price or more.
I started with Aqua Lung blades, bought a pair of flexible $25 full foots, and a pair of $25 Jets.
I figure the flexible full foots will be similar to split fins. I use the jets when I shoot video, the full foots for everything else.