[CMcAllister]

The auto parts store tools are awful. That style of tool is okay, IF you get a quality one.

I have that big Mastercool set. It does a great job. Like any tool, you have to use it a few times to get comfortable with it. It does a lot of different types of flares - bubble, push loc, A/C. Probably overkill if you are just doing straight flares, or inverted flares. They do smaller sets with the hydraulic tool and just the adapters you'll likely need.

I have had guys tell me the Eastwood tool works great, never used one so I can't say.

If you are doing AN type fittings, you'll need to get the 37 degree tooling to do it right as opposed to cheating it with the 45 degree stuff.

I like to use the "Bundyflex" zinc plated steel tubing. Comes in 25' rolls. It's harder than the CuNi stuff, will hold it's shape better and should be bent with tools. The green coated tubing is miserable to flare and also too soft.