I don't know anything about them... but there is an old thread on here
(Dunno how to post Links or my phone won't do it - but search for the welder and you'll find it
Decent old transformer migs are gettable for under £200 with patience from what i've seen, esab, murex, eland, boc/kemppi, migatronics like that and other such machines (i do a lot of ebay browsing)
One of those migatronics in good cond i can see going for £2-300
That particular one, Spot timer and stuff seems to be missing (empty holes on the left of the panel, might have come without them from the factory but they'd be bunged up), looks like its been painted, someones dicked about with it, for £350, avoid.
Thanks for all info, there is still an argument for a inverter type machine like the R-tech 180 decent warranty but possibly adding more to go wrong. I'll be patient and keep looking. The more daft questions I ask hopefully the less chance of buying the wrong machine.
Regards Tez