I currently have the original Evo 4G. I'll either upgrade to the EVO 4G LTE or Samsung Galaxy S III at some point this summer. Is it worth keeping my Evo 4G to develop and test applications on or should I just trade it in for the $30 bucks they'll give me?
I would probably put one of the custom ROMs on it and hopefully use it for development if I ever get the time. It seems like a good way to have actual hardware for testing instead of just using an emulator.