Yes, masonbook.com is awesome. And beautiful. When I've finished writing the Cookbook (goal: be done writing by Friday night so I can enjoy the weekend and it can all go to production on Tuesday) I want to use their pseudopod-to-HTML converter to see what the Cookbook looks like.
So yes, the Mason book is good. I struggled a little with the introduction to Mason, but I think I have a handle on it now. autohandlers are sweet! Already I'm looking around for a web site to build with Mason. I might try my hand at the retail site my Dad's company wants to build
I had to ask on #perl how the Template Toolkit compares to Mason. The Mason book rather glossed over that (they said they don't view TT as competition, but they didn't say why). In the Cookbook I need to steer people to the right tool for their problem, so I need to know what problems each is suited for.
When you ask people that question, though, the answer you get depends on whether you asked a Mason user or a Template Toolkit user. Some people (Autrijus and JesseTheRTGuy) had enough experience with both to answer that question. In a way it's a lot like asking "when should I use Perl over Python?" (yes, I know the answer to that question is "always"
I think I have it down, though, so now I just need to distill 250 pages of documentation into three Cookbook pages and I'll be set!
Anyway, kudos to Dave and Ken for a bang-up job. I can think of two departments within O'Reilly for whom this book should be mandatory reading