I mainly like the edge profile in that it has that constant, slight belly almost from handle to tip. I really dislike the typical drop point and clip point profiles that have a mostly straight edge and then a really dramatic curve of belly up to the point. think: Sebenza, most Benchmades, typical Hunters, etc... they have their uses, but not for me. I only tolerate this profile on thin traditional knives like opinels and slipjoints.
other than that, I prefer the straight spine spyderco models like the Millie, police, and para. they have that same subtle belly like the leaf blade models, but the straight spine gives an even finer tip and smoother profile. I also like having a straight "edge" to the spine for scraping off a table top or something without dulling the edge, or for use on a cutting board to get the diced veggies into a bowl...