For the past few months I have had the privilege of using these Vortex Razor HD 10x42 binoculars side by side with my Swarovski SLC 10x42's. To be fair, the SLC's are about 6 years old. I've found that the clarity of the Vortex Razor's to be quite nice, and a bit better than that of my SLC's. I can also notice the high definition feature of the Razor's when compared to my SLC's. I've grow accustom to gripping my SLC's, so gripping the Razor's felt a bit strange, but I'm sure that is something a person would get used to in short time.
I believe anyone shopping for optics, definitely needs to consider the Vortex Razor HD's. You need to hold a set, spend a little time looking through them, etc.