Keep with it. How many blades have you made so far? I remember my first knife was REALLY rough. But the learning process is really fun.
I like the first one the best, although I think I'd like it better with the tip profile of the third. For some reason, it doesn't feel right to me, I think because the curve is a little flatter than is my normal preference for a drop point. I like the top of the handle on the first one the best as well. It looks to me like you just rounded off the edges on the handle scales. Do you do any more shaping? I remember hearing a bladesmith saying once that a good knife is like a good woman, lots of curves that are pleasing to the eye and hand...