mighty mouse alternative?

[Morisato]

I'm looking for a new mouse. I've been using the mighty mouse since it's come out and the scroll ball has gotten stuck on many occasions. I have cleaned it every time and it would get stuck after a month or so. Being frustrated, I finally decided to try and open it but did it poorly and broke it. Now I'm looking for a new mouse but because I've used the scroll ball for so long, my temporary mouse which only has a scroll wheel just wont do. I'm looking for a mouse that has a scroll ball. Does anyone know of any? I'm not interested in that touch crap or a tilting scroll wheel.