I'm in a situation where I have 3 lines on my cell service with AT&T. My second line is a BB 9700, which I am going to drop. My third line is with AT&T and has my Nexus One. My real question is: Should I dump the second line with AT&T altogether and get a Sprint line with the EVO? Meaning, is the EVO good enough for me to have it and a Nexus One at the same time?