I don't know what you folks are smoking.
Unicomp may have allowed quality control to slip from IBM standards of 2 decades ago, but it is still the same keyboard made in the same factory on the same equipment.
The differences between original IBM and contemporary Unicomp are small, and if you want a buckling spring keyboard the Unicomp is a bargain. Brand new, the price is near the bottom of the range of any other mechanical keyboard. Also, some people prefer the Unicomp because they consider it "lighter" in feel.
If you want a true top-shelf buckling spring experience, you must go to the Model F and endure considerable nuisance.
Otherwise, you can purchase a good-quality used IBM Model M for roughly the same price as a new Unicomp (true, last year it was half, and some people are annoyed) but you might have to clean it up.
OP, don't listen to this whining. Buy the Unicomp.