To Jason Montgomery's 'couple of questions' -
It is generally advised to let roasters cool between batches to assure 
they don't overheat during a batch... overheating frys the equipment, if 
not immediately then eventually.
I just got a Technivorm Brewer.  I would advise getting the models with 
a caraf -- the one they use will keep coffee hot for hours without the 
'cooking' that ruins coffee on a heated platform.  BTW the Technivorm 
Brewer is wonderful and has the advantage that you can start brewing and 
just leave it (take a shower... walk the dog... whatever...) and return 
to an excellent pot of coffee.