A bit late perhaps, but I don't see the point behind that listing? Why sell two different UV filters as a bundle?
The Hoya HMC UV(C) in my testing is great as a budget filter, but I'd go for Hoya HD on the high end. The coatings on the HD have better anti-reflection properties and reportedly are easier to clean, although I've not really needed to do any of that myself.
Canon 1D, 300D IR, 450D full spectrum, 600D, 5D2, 7D, EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 70-300L, 100-400L
EF-S 15-85, TS-E 24, MP-E 65, Zeiss 50/2 macro, Sigma 150 macro, 120-300/2.8 OS, Samyang 8mm fisheye