Bob, you will probably be better off...
if you post this same question over on TheChipBoard.com. I know of several Phoenix-based collectors there that can give you good info. Look for replies from Chuck Mades, John Long, Richard J. (in Surprise) and a few others!
Also, not sure where you are coming from but remember to forget anything with long sleeves and long legs! But bring plenty of high SPF lotion!!! Like Tucson, I could swear that we are just closer to the Sun here!
Jim