The env phones are not even in the same league as the Droid or Pre.
The Droid has many times more apps available than the Pre. (About 20,000 now and about 3000-4000 new apps per month being published, about 2/3 of the apps are free.)
The Droid Eris is also available from Verizon, the Hero and Moment are available from Sprint also with Android, as well as 4 or 5 models on T-Mobile. AT&T is the only major carrier without an Android phone at the moment, and they should be getting the Sony xpira X10 in January.