The easiest way to load 357sig is a 10mm/40SW carbide die followed by a 357sig steel die.
If you only use 357 dies, you will need case lube. You won't if you use the 10/40 carbide first.
Preventing bullet setback is the biggest trick with 357sig. The best methods are either using a powder that results in a compressed charge (AA#9 or 800x) or using a Lee Factory Crimp die. (I use both methods, 800x and the crimp die)
As for what brand of sizing dies, it really doesn't matter in this case. I use Lee. It's not long range rifle shooting. If it works, it works.
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