Having fun with photomatix, are you?
That can be a lot of fun.
If you'd like to know how to eliminate or decreasae the grey shadow in some of the highlights (like in sky at the upper left corner of the first pic) let me know.
But here is a link to PhotoScape a free editing program. It has many interesting effects. You have to be careful to not download the spam they include with it. Just read during the installation and uncheck the added software.
Elev 407 ft 47.39 °N, 122.15 °W