My personal preference is Victor. I have a setup in the shop and another on the truck. I 'standardized' on victor years ago so I would have to only buy one type of tips.
I still like Victor, but a lot of their lower-end stuff is now made in Mexico.
I think Smith is the only one that's 100% made in the USA. I have their AW1A. It's very nice.
If I were buying everything over again, I'd probably go with Smith.
I think some of their torches have the lifetime warranty and some don't. So read the find print.