I know money is tight these days, but with welders, you really get what you pay for. I bought a Lincoln back in 1995, and still use it once a week. I can still get liners for it, tensioners and any part I need.
HF models are a pain to get parts for, 2 years later. Without Argon, you get cold welds, spatter and not as strong as you do with a MIG set up......
As I said, I know money is an issue and as much as I like to keep stuff low-budge, some tools I spend the green on, to preserve my investment, years later.