I think the Eastwood looks nice also... but have to admit I use a medium grade parts store version with good results. (AZ OEM brand, one step up from the cheapest). Works fine on mild steel and probably would work fine on CU-NI. I would not even attempt stainless with it. When I cut my rear line for a prop valve, I did use it under the car as well.

I had to practice a little on scrap tube. After that not a single leaker. My use is occasional and light so it will last a good while.