If you're convinced that LTE is the way to go and aren't interested in picking up the Nexus 4, then Amazon Wireless is running a couple of deals right now for those who have been considering making the jump the Sprint.
First off, the HTC EVO LTE is now only $20. Twenty. Not a bad deal for such a solid phone, especially if you plan on installing CyanogenMod 10 on it. If you're not really the HTC type, though, the Galaxy S III was also on the receiving end of a price cut. You can now get this handset for $50 with a new two-year agreement.