I am cheap when it comes to full foot fins. I own about 4 pair for myself, each a different brand, size, and color. I have shorter ones for quick dives or snorkeling. I have longer ones for dives that require covering greater distances. But the one thing in common among all my full foot fins...is that they are cheap. To me, rubber is rubber. I am not going to pay a higher price because of a name.
And having fins with the latest design to propel you 100 mph is not going to matter if you don’t have a good fin kick. It’s more about your ability to swim with fins than the features of the fin itself. A split fin, flex with turbo extreme is not going work unless you have good form. So practice a lot and develop a kick style that works for you.