Whats everyones preference on u joints?
Don't have time for more research at the moment, but I found this new product!
Spicer® Extreme™ U-Joints - Driveshaft | Spicer Parts
It appears that the Spicer Life Series U-joints are the ones that my driveline shop recommended. They are listed as "solid" and not greasable. So without finding one to pull apart, I would assume that they are not cross-drilled for lube distribution.