I normally process my HDR images with HDR Efex Pro but I saw a tip that shows how you can use LR 4.1 and Photoshop to process your HDR so I gave it a try and here is the result.  Here is the link to the tip.

Here is the version from HDR Efex Pro

I think the basic processing was equally well done however, HDR Efex Pro has some presets to help add interest to the image.