Like the others said, I'll echo that you might want to hold off til November when the next line of Google Nexus phones come out - and if the rumors are correct, we'll see an entire line, with a phone from each manufacturer (LG is a lock, Sony rumors are abound, Samsung still sounds like its in the fray, and even HTC has been mentioned) all at different price points.
Its what I'm planning, but obviously you'll have to buy the phone outright (which shouldn't be too bad, current Nexus--> galaxy nexus is 350 which is pretty awesome).