Mike,  Wow! Thanks for sharing such a great image. I'd probably spend days and days on such data and still end up with an unbalanced and noisy image.  I noticed that you and Mark were sharing computer specs and that you may be upgrading. FYI our meteorological office change (upgrade)  their supercomputer regularly, so if you can, wait a couple of years then keep an eye on eBay for their old one. This might speed up your work.  Ray