What cocoajoe means is that this is a topic that frequently inflames peoples' passions and the discussions can become quite heated.
Here's my rather mild opinion
The best fins for you depends on a combination of all sorts of factors, and the fins that work best for you may not be the ones that work best for me or for many other people who respond to your question. Here are some things to consider:
1) Are you comfortable barefoot in full-foot fins or do they hurt your feet? When I learned to dive, full-foot fins, which you wear barefoot (that is to say, without booties) cut off the circulation to my toes because of pressure on the instep. I need open-heel fins and booties for my shape of foot.
2) Do you have slender legs with virtually no fat on them? People with very slender legs tend to be foot heavy, even when properly weighted. These people should stay away from really heavy rubber fins and should look for fins that don't add to their foot-heaviness. There are several models that are made of plastic with rubber only in key areas of the fin, in order to make it lighter. Conversely, people whose feet tend to float should get the heavier fins.
3) Do you have strong knees and ankles or have you had problems with them? If you have to be careful of your knees, for example, if you wear a knee brace for certain sports, split fins will generally cause less strain on the joints than paddle fins.
4) What kind of diving do you envision yourself doing in the future? If you need precise maneuverability for what you want to accomplish, paddle-style fins are more versatile than split fins since it's easier to learn to do things like kick backwards with paddles.
Ideally, you would be best advised to try different fin styles out before buying so that you can see what feels the most comfortable for your particular physiology and so you can decide whether the fins will suit your diving objectives.