Feanor,
Your the man! Great information. I'm going to start sniffing around DIYaudio and see what I can find. I'd love to talk to multiple people who have actually done DIY preamps and who can give solid feedback.
I personally like the option of doing a custom case with the tubes on top. For no other reason that (to my tastes) it really looks cool.
So, are you satisfied with your power amp? Is it as good as the one that you had before?

Best Regards,
Stan