Thank you for posting this.
I've been looking to replace my stolen K10d and have been scouring the net for more comparisons like this. Though I know it's early days yet, early firmware, not-scientific, etc... it's quite exciting to me that the K20d might live up to it's hype in terms of IQ.
On a similar vein - I like the idea of a "(mostly) raw RAW", giving some of the PP control back to the photographer/image specialist. It might save some battery juice too. Given that I feel Pentax thinks more about the photographer than most other companies, I wonder if they will ever offer the option. Although, having a button for RAW++ (+++) might be a little wierd...
Frank.