Yeah, my A1200's PSU was way heavier than my A500's too. It's almost like the prototype A1200 PSU got penis envy and snuck into the design department one night.
Suffering from obsessive compulsive disorder, I need something to touch with my feet when I'm sat at a computer. However my Miggy's cord was shortened for reasons I don't quite recall so my brick spent most of its time on the desk.