[Gav]

I reckon you will be disappointed with a gas less mig. The weld spatter goes everywhere and the weld itself looks crap. That being said the gas less wire welds galvanized steel great.
The newer inverter style MIG welders are really light which would be a bonus if you want to take the welder to the job rather than it staying in the workshop.

I have a WIA 150 for the workshop and it is great.

Once you do get one, remember that you reverse the polarity when changing over between gas welding and gas less.