I am thinking of getting a single rackspace power amp to fit nicely in my 3-rackspace rack bag with my Pearce BC-1. I am aware of the Stewart Audio World 1.2, which is 1200 watts bridged into 4 ohms and only 11lbs, which seems to be a perfect match for what I am looking for. I am using an Avatar 212 4 ohm cab. The cab could be upgraded at some point, but it will still be a 2x12, 4 ohm configuration. So, even though the Stewart Audio seems to be the one I will go with, I was curious if there were any other single rackspace power amps with similar specs. Also, any World 1.2 owners can chime in with their experiences, either pro or con.