"Yeah, there's the Versalite at a theoretical 10*F. However, note that the Versalite is 3 inches wider in girth with only 1 ounce more down than the Apache. I have some variation or another of nearly all of WMs bags at hand right now, and the Apache clearly lofts better than the Versalite."
I'll concede there, Brad. The Apache is a good bag.
Versatility wise, yeah, it's personal. Based on personal experience, I'll stick with my Ultralite over my former Apache. But, like you said. that is strictly personal preference. If I were anticipating temps below 10 degrees, I'd likely go back to an apache, though.