Karid just keep your Droid. People really really need to stop "waiting for the bigger better thing" especially if you've got a great phone already.
Isn't it a pain for people to downgrade and go back to a "dumbphone?" The Droid will last you just fine, and the Eris is a helluva step down from it. HTC won't launch till at least spring, but if it's not a CDMA even longer...prob next fall or end of summer. The Nexus One isn't that impressive and your Droid is more than comparable.
Stick it ou!