Hate to throw cold water on this but the Aldi one is 80amp max. I have difficulty welding anything of a decent thickness with my 110amp Oxford, and stuff that is thin enough is better done with a Mig. OK if you need to weld thin metal (I recon 3mm max) on site, but I think you are better off with an old 140amp buzz box for general use.
It's only for odd use, (lugging around), and practice purposes. I have the 110 & 180 oil cooleds if I need something proper. They aren't exactly mobile though. Been & picked one up today. For that price, would have been daft not to.