That's fine, especially if you can do stick! (Thousands can't!).
Personally I'd go for the Portamig, it has the widest range. A bit more power at the top end is always useful, and you never know when you're going to need it.
But if you're good with stick and your MMA machine is 170-180 Amps, you could get away with the Welly welder, 160 Amps, and save around £100. Depends how often you might want to use the top end of the range. 160 Amps should be good enough for Landy work.
Personally I'd go for the Portamig, it has the widest range. A bit more power at the top end is always useful, and you never know when you're going to need it.
But if you're good with stick and your MMA machine is 170-180 Amps, you could get away with the Welly welder, 160 Amps, and save around £100. Depends how often you might want to use the top end of the range. 160 Amps should be good enough for Landy work.