sounds great that saves a lot of time getting wire-speed right near enough 1st time haha just read that bit about gas and earth hahaa
You mentioned GYS. I've got the one below and rate it, much better built than many of the hobby end brands. Does MMA too. You could find a used one around £300 - £350 I'd think. https://www.wecs-ltd.co.uk/product/gys-smartmig-3p/