I've started today on the road to a new light weight rig with the purchase of a Barefaced Compact. The Ashdown Mag 600R will be out the door soon in favour of something lighter, most probably Markbass. I'm just not sure if 500W of Markbass power will have the same Oomph as the 575W of the Mag 600R which I have gigged pretty much on full volume at times (I play a 5 string and like it DEEEEP!). Might have to make the step up to a Little Mark 800.
At the moment I have an ABM 410H (UK made, before they went to horribly cheap looking PRC ones) on top of a Mag115 deep. The ABM isnt exactly light at 36 Kg but i have a strange infatuation with it and it does sound awesome. The compact should be significantly better sounding than the 115 and comes in at less than half the weight.
Cant wait till it arrives.