which previous phone to buy on VZW? eris or moto droid?

[leland_jr]

I currently have an Imagio that I'm keeping because I need the global capabilities and will finally buy VCAST for the world cup. However, I'm interested in playing with Android, and I'd like to pick up a second phone for domestic use. I'd love to buy a Droid Incredible, but I don't think I can find one in my budget of $300.

However, there are plenty of Droids floating around after Google I/O and also Droid Eris' from upgraders.

Which one should I get? I'd want to load Froyo on it and get decent performance. The Eris seems to be far cheaper and also smaller, however I'm worried about performance of the phone. The Droid seems awesome, but is even bigger than my Imagio.

Recommendations?