I would wait for the S4 or HTC ONE, depending on the current condition of your Bionic. Mine works wonderfully so I have no issues waiting for a phone. If your Bionic is on her last legs, you have a couple of options.
Galaxy S3
Nexus 4
Note 2
RAZR maxx
As I said earlier, if your bionic is still working perfectly fine, I would wait until your carrier gets the HTC One or the S4.