Miller180 vs. Lincon 180
I have a friend that builds trophy trucks. His comment was, mig he likes lincoln, tig it's millers.
I don't think you can really go wrong with either blue or red.
I have a millermatic 175 and it was a royal PIA to get right. I still don't like some of the embedded features on the motherboard, like the wire speed sensing. Once you get it sorted out and a feel for the machine, it works fine.