Best? Aye, there's the rub
After all, "best" is a highly variable statement when left unqualified. I don't think I can imagine a more beautiful design than the Colt Patterson - but don't ask me to carry one in a firefight! Beauty of workmanship and functionality has to go to the Smith Model 3, and for their day they were the best. Frankly, I think SIG's are ugly, and I got one, or I wouldn't be here. Don't misunderstand, I'm proud of my 239 in .40/.357SIG, and it is my choice for carry, but don't ask for my picture with it!
Just my $.02, and probably not worth that!