Got a couple of these Crossfire HDs in 10x50 for my sons during one of Guidefitter's 'friends and family' specials. Both sons love these optics. Vortex is a big name in the industry, and this is probably the reason why. When I look through these binos, I gotta try really hard to notice the difference between these and my Swarries. Of course would probably notice the difference after hours of glassing. But for the price these are very well-performing glasses... huge bang for the buck. Great entry-level binos.