I picked up a 2nd hand Sealey 150amp mig......never let me down...welds a treat for what i need and its now converted to an ali welder. For a first time welder a sealey or clarke 120 to 150 amp will do you just fine. Welded up every version of thor and envy with one and not had a problem. the better you get then go for a high end welder but then only if you make the most of it....a lot of money for a kemppi if its sat doing nothing. I now use a Lincoln weld Tig to do all my welding but that is what i wanted as i can now weld stainless steel and titanium as well as mild and hardox. Use the Sealey mig for ali welding.