[Schonyenko2]

I know everyone has a favorite, but I'm pretty happy with my Lincoln. I have both Lincoln welder, and plasma cutter. No issues with either of them. The Miller plasma cutter kept blowing circuit boards.
Butt welding is more difficult. Sometimes a copper block behind the seam helps control any bleed through.
Sometimes it's actually easier, quicker, and gives you a better finished product to replace an entire panel, than to fix a rusted area. Wheel lips are a good example.