Nothing beats the majestic Wharncliffe for ease of sharpening. Can you pull a straight line? There, you mastered Wharncliffe movement. The tanto is pretty easy too, just two straight lines (assuming american tanto instead of traditional).
I hate recurves with every fiber of my being. They are almost completely useless for EDC, and are unnecessarily hard to sharpen.
All in all, my favorite blade shapes are (in order) Wharncliffe, modified Wharncliffe, leaf, then spear point. Obviously I'm not a fan of dramatic belly on my knives (I hate skinner blades).