First I've heard about any shutdown issues. I think the L9 is a really great phone. It performs far above its class in my opinion. I mean it is smooth and fast. I also have a Nexus 4 that I'm now using as my main phone. I just love pure android and wanted jelly bean and fast updates, but if I wasn't using it the L9 would be my choice. At least for now. It will be a little dated when key lime pie is released.
But if you aren't switching until December, the Nexus 5 and/or Motorola X phone should be out by then. Those should be really great, low priced devices.