In the desert, you will encounter many different types of terrain. You will also encounter about as many types of footwear as you will types of terrain.
It has been my experience that the best way to go is to find boots that are as light as possible, while still affording you the protection you will need.
Things to take into consideration are:
* What types of terrain will you be hiking in?
o Deep Sand
o Shallow sand over hardpan
o Rocky terrain
o Mountainous
o Combinations of the above
* How well conditioned are your legs?
* Will there be a lot of cacti?
* Will there be poisonous snakes (If so, do you have snake leggings)?
* How much can you afford?
Heavy Soled Boots: These boots typically have large lugs and are very heavy. Good for rough terrain. They usually have very good ankle support. They also offer good protection from snakebites and cactus for what they cover. They are not the best for deep sand or hard steep climbing conditions. They usually don't drain very well if you walk through water.
Hiking Shoes: They are typically light, and easy to walk in. They make decent climbers, and are comfortable. they do not offer much snakebite or cactus protection. They leave ankles exposed to being smacked against a sharp rockface (and it WILL happen), and they usually have little to no ankle support.
Military Boots: Army Desert Combat Boots are what I usually wear. They are light, yet rugged (enough). They make decent climbers, and have decent enough ankle support. If you walk through water, they have drain holes in them. They also breathe very well (which make them easier on the nose when you take them off at night). They have very little snakebite or cactus protection (but that's why you have snake leggings).
When it comes to footwear, the most important thing to have are GOOD SOCKS! Like water, socks are a place where you don't want to skimp. Spend the money and get some good cushioned hiking socks.
If your boots didn't come with them (most do), don't forget a good pair of supportive cushioned insoles.
If you haven't guessed by now, I am placing about as much stress on taking good care of your tootsies as I do on having enough water. Your feet are what you will be relying on to get you to where you are going, and back to the car. TAKE CARE OF THEM!