soutthpaw wrote:Usually, 125 cf is rental, 150cf is always customer owned. If you buy a bottle, NEVER let them swap you out with a printed neck ring bottle. ALWAYS demand a blank neck ring bottle... Even if it's an 80 or 60c.f. Etc.

How come?

Thank you all for your responses. You've saved me time, money, and heart burn : )

I'm getting some mig welding equipment and I'm not sure what size tank to get. I'm a beginner, will be welding steel using mostly .030 wire. The welder won't see everyday use, but I don't want to run out of gas too quick either. I haven't found advice on what size tank to get when starting out. 20 s...