ExploderWizard
Hero
I do have to say, the five saves are way less intuitive than F/R/W saves.
I don't have a strong desire to change it in my AD&D game, mind you, but I think F/R/W are just more obvious categories for ad-hoc rulings.
-O
The 3 save system can be worked up just fine as long as the progression is a little more even so that certain classes don't have nearly zero chance to make a save outside of thier strong save(s).