panorama software

does someone of my fellow blog readers know a good panorama stitching software for OS X? i’m currently using LM Stitch, which is a software which just keeps working in demo mode (as opposed to the Stitcher EZ from Realviz which refuses to work after 30 days). But the problem with LM Stitch is that the UI is really awkward and not very useable. Any suggestions are more than welcome. I would really like to use the Pano-Tools, but Adobe Photoshop is just too much for my wallet!

The image below is just a 3 minutes hack of a little panorama from images i made this past weekend in silvaplana (b/w because of the demo-version):