I’m impressed by my Esab Caddy 200i but that is a low end industrial machine and correspondingly priced unless, as I did, you get a decent deal on a used machine. £600 with Albee bottle about 4 years ago. Albee bottle comes with its own regulator so I didn’t have to buy one and can be sure that it’s working properly. I’m little unconvinced as to absolute performance and reliability of the economy ranges of regulators.
Whatever you do get a “synergic” one that sets sensible parameters automatically. I had one of the old style switch select SIP machines for a fair few years and got precisely nowhere. Understanding what the switches actually did and which ones to use defeated me. Not helped by the too cheaply made, moderately crap, wire feed. A quite skilled welder friend could make it work pretty well but admitted it took some futzing around and skilled technique variation to cope with the wire feed to get good results.
I already had an excellent Fronius MMA / scratch start TIG box so pure MIG made sense for me.
For most folk the three in one MIG, TIG, MMA inverter driven boxes make most sense. £600 – £800 (ish) from a reputable supplier but most of the extra cost of a 3 in 1 relative so single purpose goes into better internal bits. Microprocessor control makes it relatively cheap to add the extra functions so specifications have to be relaxed elsewhere to get the single function price differential.
The price / performance / quality thing has really shaken out into something sensible over the last half decade or so.
The inexpensive auto-darkening helmets are remarkably good these days. Mine is an expensive 3M which might have been worth the extra 5 years ago. But the margin relative to a modern cheapie has eroded to very small.
As has been said above you have to accept that you are in for order of £1,000 if you wan’t just works and no swearing.
Clive