I think Snow and Jones are fine for this year and even next year, but both of them are clearly not the answer long term.
Cavs are going to have to either trade for a young point gaurd, or get a good draft pick and acquire a solid pg.
One player that I think is just going to be great eventually is Devin Harris. He is just so quick and intense that he is able to D up and penetrate against any other pg. He has passing skills, he just doesn't use them. Thing is, I am sure Dallas will work hard to keep him.
With that said, drafting is probably the way to go. We have a first round pick this year. If we could trade up and get Rajon Rondo, that would be awesome. He is top defender on the collegiate level and he is lighting fast. He can also distribute the ball extremely well. Dee Brown is an interesting prospect. I don't think we need a great passer on this team at the point personally. Lebron, Larry and suprising Luke are all very fine passers. What I would rather have is a pg that can both defend the quick gaurds and also break down defense with speed and penetration.