I have a pair of yellow Atomic Aquatics split fins. They're a perfect balance between a paddle fin and floppy split fin like Apollo. I liked the Apollos when I tried them in the pool, but in the end, I decided that I felt more comfortable with the Atomics. They're quite a bit stiffer than the Apollos, but swimming in the straight line, I still get the great benefit of split fins, which is very low exertion (it does require a somewhat different kicking style, though... more of a flutter kick then whole leg movement). With my old Mares Avanti Quatros (paddle fins) I used to get some pretty bad cramps in my legs at the end of the dive, but I've never, ever experinced that with my Atomic Split Fins. Highly recommended, but in the end, opinions of people on the Internet don't really matter... you should try them out for yourself, to see what YOU think of them. There are also many die hard fans of the Apollo Bio fins, and the yellow version is a bit stiffer than the black ones, so that may be an option for you as well.