I recently upgraded my HDR software to Photomatix v.4. Some major enhancements! Can you tell? I took these pictures at sunset in downtown Ogden about a year ago and HDRed the top one then in v.3. The lower one I just HDRed in v.4. BTW there was no retouching of either photo in Photoshop. If you’ve got Photomatix it’s worth upgrading (it a free upgrade from v3 to v4).