Own a pair of splits and a pair of regular blades.

The splits are great in places like lakes, but quickly become a hinderance with a strong current like in rivers,or the ocean when fighting swells. They both serve me well but I am partial to the splits because there is less of a strain on my knees when used in the right conditions. Also I can honestly say that regardless of the condition, I have never gotten a leg cramp when I was wearing my splits.