I need a sales task organizer that prioritizes more

I work from my home office and I am on the phone a good portion of that time when I am not emailing. For years I have used ACT 6.0 but I don't take advantage of the majority of its uses...when I try to make it work for me a little bit more it never works out too well. But it still serves me well as a contact list with notes and printing labels etc - but one thing that annoys me greatly is that I can only prioritize my calls into "High" "Medium" "Low" Normally I don't notice this setback but lately I have been really cranking up my call volume and when I put the call into the future I need a more complicated ratings system, at least from say 1 to 10, but 1 to 25 would be better. I know I can use the "types to show" but I already use those for their intended purposes and I know I can use the colors but that won't make Act prioritize them based on value...

so is there a program that does this or is there a way to make act do this?

thanks for your responses.