I am in process of building Watt/Puppy clones. I heard newer WP 6.0 and was impressed. I am using best possible parts i could afford. AudioCap, Ansar, Foil inductors North Creek and Allen Bradley resistors etc...! I am using bracing and damping "ala North Creek" plus some of my own. It is fun and addictive!
http://www.users.nac.net/markowitzgd/david/david.htm
http://www.users.nac.net/markowitzgd/david/david.htm