The page you linked to has pricing similar to these guys, and given that the delivery and pickup and included things are very similar, I wouldn't be surprised to find out that the guys you found are working through the guys I found.
As for the others on the first page, Fairwheel and ABE have fairly good reps from what I've heard, but I have no idea on what they might charge for rentals. Bargain Basement isn't bad, but same on not knowing the rental charge. The others I'm not familiar with at all. There might even be others in town not listed on that page.
As for the warmer weather, well... maybe not so much this week.
@mwrobel: You work, then I'm going to bike.
And for four weeks, starting 5 April: better buy a bike?
For touring from Tucson to Albuquerque (Globe - Show Low)
Have a Giant Expedition (at home) that doesn't like to fly because of the airlines fee-policy.
Every advice welcome.