The smartphone saga continues

It feels like it was just yesterday I was listing the problems with my HTC Evo 4G.  Now it’s time to start looking again – my Samsung Galaxy S2 has started acting up.  The battery was really low (close to dead) last night, so I plugged it in next to the bed and set my alarm.  This morning, my alarm didn’t go off.  I picked up my phone to check the time, but the screen wouldn’t come on.  I could see by the indicator light that the phone was still on, but my screen remained black.  I tried unplugging it, which usually triggers the screen.  No screen.  I took the back off and popped the battery out.  Battery back in, push the power button, and there’s my screen!  Of course, it’s going through the power-up process, but at least it’s there.  And it’s been there all day, off and on like it’s supposed to.  The black screen followed by battery thing happened to me a couple of weeks ago, too.  Maybe I just need a new battery, but you know what?  I’m due for an upgrade.  After reading CNET reviews all day, I’ve narrowed down my choices to three: the HTC One, the Samsung Galaxy S4, and the Google Nexus (that John just got).  My work phone is an S4, so I can play with two of the three before I ever set foot in a Sprint store.  If anyone has any advice, I’m all ears.