Spline Drive Versus Keyed Lug Nuts

I know the lug nut subject has been beat to death. I did a search and read through a lot of threads about lug nuts.

I just orderd a set of Ultra Mavericks 235 in black. They call for the 60 degree conical (acorn) lug nuts. I know the wheels have small holes, so I want to get a smaller diameter lug nut. I know that my choices are spline drive and keyed lug nuts. From most of the threads, I see that most folks have the spline drive. The guy at Ultra said he has the keyed lug nuts. I'd like to get opinions on both types. I would to get the lug nuts before the wheels come in.

Thanks!