Ribbons caught my att.- should I buy or build?

Amazing how this hobby can present us with millions or billions of options.
Recently I get wind of infinity's cult following, I suspect the ribbons have something to do with it. Dali is making some awesome speakers using ribbons as well.
I remember a friend telling me that the infinity's rs-1b as good as they may be are a bit dated and driver replacement is necessary if one wants sota. I figured why buy an old pair infinity if the drivers will be replaced anyway. Would it make sense to just start from scratch, and where would I start looking for ribbon drivers?
Or would it be more cost effective to go with dali's or piegas or vmps or what other designs are out there?
I would like to have the best sound possible, my other option is mbl 116's. Nothing else ever sounded like the mbl's. Obvious I have a price ceiling, would like to keep it under $10k.