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It depends a lot on your diving goals.
Split fins excel in straight-line, efficient and rapid finning. However, not many experienced divers have any need to value those characteristics; prefering a slower, more relaxed pace and the ability to maneouver themselves precisely and with dexterity in the water.
That said, for general open water diving split fins are going to be fine. If you want to develop an interest in photography, wreck or cave diving then you will need to identify a more stiff-bladed paddle type fin that provides better static and maneouvre control.
My personal preference for fins are Force Fin Pros. These suit my individual diving needs perfectly. This is because I predominantly dive within the confined spaces of shipwrecks and because ForceFins offer the least strain on my lower limbs (which are pretty screwed from years of military service, martial arts and playing rugby).
My second choice would be Scubapro Jetfins or OMS Slipstreams.
However, many novice divers take some time to decide their diving goals and preferences. Such requirements are normally determined only as a result of gaining more experience underwater. For that reason, it may not be advisable to spend a large amount of money on a specialist fin (whether bladed, split or otherwise) until you have a clear understanding of your specific needs.
Cha_, save your money... Go to a used dive gear shop, craigslist.com, or pawn shop and find a 10.00 set of Fins. For now that is all you need. Go log some dives. Buy a set of good fins next year, by then you should know what you like/ dont like about what your using. Which in turn will help you decide what to buy.
for the beginner for me, what do you recommend?