I recently brought some NIK Software, it's a plugin for Apple Aperture which gives you some amazing filters (more enhancements, in my opinion). I have just given the HDR Efex software a test, and I'm really happy with the results.
I really cannot stand over-processed HDR photography, I really love the subtle look, where you simply catch a greater tonal range, without it being over saturated and full of halos.
This piece of software is stunning, and I'd seriously recommend just testing it, If you are like me and find a lot of HDR stuff a bit, how do I put this? Shit. Then, this is for you.
See the first image, looking up the Sand Dune for the first lightly processed HDR image. Of course, If you do enjoy the opposite of what I do, the software does that too. The second photo shows that.
P.S. I'm not receiving any commission for this, although I think I should :-D