Specifically:
Athlon Optics Midas HMR 2.5-15x50 - BDC 600A SFP IR vs Leupold VX-3HD 4.5-14X40 SIDE FOCUS CDS-ZL WIND-PLEX

I've got the Leupold currently setup on one of my hunting rifles and appreciate the quality of glass and the light weight.

How does the Athlon compare in terms of glass / image quality? I can get either for roughly the same price, so the decision boils down to overall fit, finish and quality. The rifle is a 7.5 lb 30-06 used for hunting everything from white tail to hogs.