I will throw my claim on the Droid X! Say what you will, but there is no denying that this is a Monster Device out of the box...MotoBlur does not kill the phone or its capabilities as much as some would have you think.
Like I tell other people. My Droid X makes other peoples phones have "phone envy" ...to the tune of me being responsible for 6 of my coworkers/friends purchasing the DX either initially, or swapping from D1`s, D2`s and Inc`s...
I had the D1 the day it came out and loved it. I've got the droid 2 and I love it even more. I've used the X, pro, ally, fascinate..id say D2 beats em all.
OG Droid... was groundbreaking when it hit and to this day there are great phones out there, but nothing that matches what the Droid 1 could and still can do.. Due for upgrade on two lines and still sticking with my Droid 1.. until something as revolutionary comes out.. like 4G devices such as Mecha or Etna or heck even the LG and Samsung dual core are looking pretty.. but will probably be the Mecha or Etna..
Got to play with DI and DX. I like the incredible better due to touch hardware buttons and less bloatware. It felt faster and nicer than even my D1 with CM6.1.2 and P3 1GHz kernel which I can't say about Droid X.
Rooted OG droid hands down. yeah the d2 has a better keyboard and the X has a better camera w/ 720p and hdmi not to mention the 1ghz processor and I like the version of blur they have. But all hardware things aside the og droid is still the best. if there was a full stable port of blur that I could install on my phone it would make it so much better.