Mike Arnopol composite Bassic 12 + tweet, 17 lbs
Superb. A bit heavier than a box of Corn Flakes, pricier than most boutique 12s but worth it if you have the scratch and hate lifting more than you have to IMHO. Faital 12 and simple tweet, 8 Ohms. It's a great match with my Walkabout and can be stacked with my 4 Ohm Bassic 15 (sans tweet) that weighs just over 20 lbs. For those looking for helium-filled cabs without sonic compromise, it doesn't get any better than Mike's work IME.
Some of my heroes: Jean Beliveau, Richard Dawkins, Galileo, Hubert Reeves.....