Which one is better?

Left or right? And why? Or would a combination of both programs and/or methods be the best compromise?

On Flickr under http://www.flickr.com/photos/wjlonien/6669372451/sizes/l/in/photostream/ you get the stitched-together version of these E-520 images, so it's 20 Megapixel, or about 11.6MB as a jpg.

Thanks for your kind help!

And cheers,
Wolfgang
--
using free and open source software, and an open camera system
http://wolfgang.lonien.de/ (private blog)
http://www.flickr.com/photos/wjlonien/ (private photo stream)