I had no issues at all with Alamo. Got a good, clean car for tooling around Phoenix efficiently at a good rate. Enjoyed being able to pick out the vehicle myself. The final toll was exactly what they said it would be. Recommended.
Noticed other reviewers mention the "upsell." This is standard practice - I've never not had it. Just say "no" (or "yes" - depending. I was awfully tempted by the thought of a convertible Mustang for a week).