+1 for Jasic, I’ve got their smaller one, 140 amp I think it is. Welds nicely seems well made & the 5 year guarantee sold it to me.Jasic evo arc 200 for me, there around 400 quid,i think they do a 160amp version to so maybe some change out of your 400 notes.
My only welder remains a lidl arc and a lidl flux coreI hate to say it but the Parkside inverter welder is actually pretty good with a decent warranty. Almost small enough to fit in your hand and does a scarily convincing 180A with lift start, anti stick etc and of course claims DC TIG although I haven't tried that, as I have another machine for AC/DC TIG. They come up for sale for about £150 every so often in LIDL if you aren't in a rush and aren't a professional.
Looks like this