I'm kinda a "if it ain't broke guy"..... If you're worried about component failure, you could carry a spare(s) part or two.

If you want to upgrade or experiment with the new technology... I'd remind you that electonics are all exposed to the same component failures, you may think you're getting away from an impending failure of a 10 year old unit only to experience infant failure. The new technologies can be exciting, I recently bought a new MSD dizzy that has an all electronic advance system. Both mechanical advance and the vacuum advance are electronic! Just a little dial under the cap to dial in what you need and when based on RPM.

I'm not usually a fan of the black magic called "digital".... but it's hard to argue against it sometimes!

I had previously used a dual point mallory without vacuum advance and had no complaints! But the dizzy won't fit into a new combination I want to try. So I made the jump.

I guess all I can provide you with is some thoughts to ponder.. The vacuum advance would be nice, but not a requirement and it would be interesting to make a log and track the changes in the car with a before and after comparison.. Good Luck!