I've used more expensive boots (Vasque, Danner, etc.) but for strictly dry desert hikes I've had great luck with the US military desert boots. The ones I like are NOT the Altama version....mine are US milsurp, with the padded top collar, suede ankle supports and CoolMax liner (the Alta's I have used had no padding on the top collar, no CoolMax and nylon over the ankles.) The 40-50 dollar price tag is appealing to me as well; for $150 I'd rather have 2-3 pairs of a workable boot and the socks to go with it than a single pair of boots.
The Panama sole on these boots worked well for me in rock, scree and sand....years ago during some months at an archaelogical dig in Israel, and more recently on trail hikes here in god-awful-hot Texas. In temps up to 120+ degrees, with GOOD socks (ThorLo Trekking/Hiking), the US desert boots worked as well as any other I tried, with less weight and no worries about appearance (call me oldfashioned but I hate scuffs on smooth leather; the suede took care of that little peeve).