Hi Windy,
If possible I would go for an AC/DC tig rig.
I have a lovely little tig welder, but it does not do AC/DC so I can’t do aluminium with it.
When I bought the unit, I thought it would be ok as I don’t do aluminium that much.
But now I regret not having it.
It is a lovely GYS tig welder and it welds great. Really like the feel of it and how light the whole unit is. Works like a cham. But no aluminium.
Lykle