I'm inclined to agree that the needs dictate the tool. Personally, I keep a Power Probe iii and a cheap $20 craftsman multimeter in my box, along with a lead set I picked up on Amazon (tips, clips, etc). The only problem i have is my lack of a MIN/MAX setting or autoranging ability.
For all intensive purposes, that combo works well for me in a shop setting. But again, it's never a bad idea to have a good dvom kicking around.
Little side tip: those "grenade pins" that come in t-belt tensioners are very strong and grind down very easy. I keep half a dozen different cuts in my kit to fit multiple pin/connector styles. Stay very sharp too, for back probing. Cheers