Two more thread stating how good foams are and how they reduce cost.
http://www.oople.com/forums/showthread.php?t=129195
http://www.oople.com/forums/showthread.php?t=124690
Then I found the debate where this all started at start of last year. Seems to me, the foams issue at least, has been discussed and decided already.
http://www.oople.com/forums/showthread.php?t=119914