I have owned the Droid 1 and now I have the Droid X. I really like my phone and I feel it should be rated in the top 5 of Android phones. Every person has their preference and I am not concerned with who is number 1. With that said, I could vote for the Incredible in the number 1 spot. It is the closest you could get to the Nexus One which even after being out for almost a year, it is still a good phone. If the Droid 1 had the memory capabilities of the N1 it would still rank in the top 5 as well. All the other phones are similar except for a few things that were changed. As long as they are all Android and running 2.2 then they are the best. If a phone is not running the latest OS then it ca not be in the number 1 spot.
I love my Droid X. Had the D1 and loved it, but I hated the physical keyboard. The X is the best phone I have ever had my hands on. I'm sure those other phones are great as well, which is why Android will always be the best.