I have a Cigweld Mig 135 here and I need to get some wire. I have a gas bottle here to use and was using 0.8mm gasless wire, before getting the gas.... MY local shop has 0.6mm or 0.9mm gas wire. It will be for general purpose welding, your usual RHS and angle iron type stuff. If i get the 0.6mm this might be better for real light stuff like panel etc, but maybe not so good for general steel welding. Not sure on this....
Cheers.
Mark.