I work out of about 20 trucks depending on what is available (I manage but fill in when needed). We use a lot of line fittings. Trucks have everything from Snap-On to generic.
Even on line fittings, lubricant and heat, where safe, are pivotal.
I can't really tell a difference between the top truck brands an cheaper brands, as long as it isn't chinesium. Kobalt works as well as Snap-On if you clean, lubricate, and heat, where safe, the fittings.
Anymore, if I can fit a pliers wrench on it, I don't even look for tools. I just clean the fitting and use what I have immediately available.
What you are working on may vary, but don't over estimate the problem.
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