The name on the machine is, like ford vs. chevy vs. dodge. I like miller own a mig and a tig and would recomend them highly. I own a millermatic 210, super machine very durable and dependable. in 2 1/2 years I have used over 200 lbs of wire and I don't do it for a living just repair work and the occasional fab job.
Advise to you, test drive all the models in the capacity you think you want and make the decision on the model that suits you best. Each welder welds differently as does the operator work differently, so find what you like and don't regret waiting.
Peace,
pjs