If rifles really had souls, I think that would come from previous owners and the hunts and memories they shared with those rifles.
I'm soooo in this camp.
I can say with certainty that I'd take Phil Shoemaker's "Old Ugly" over anything that's been crafted from the best-of-the-best with rich wood and engraving.
That's not to say I can't appreciate the finest of things but I look at my rifles as tools and what and where I use those tools is what gives these sorts of things meaning and soul for me.