I'm thinking a BFR will be my next purchase - I'm looking for a range toy that makes a big boom. The tough part is deciding on caliber: from reading here and elsewhere, it sounds like .500 S&W is unpleasant in this gun, so I'm thinking either 45/70, .475 Linebaugh, or .500 JRH. The JRH seems to be really well liked, but I'm also thinking I want a 7.5" barrel, which means the JRH would be a custom order, and therefore higher in price.
Overall, I'm not sure how to decide which caliber, and there's no way I'll be able to demo one of each, so I turn to you - which caliber and barrel length BFR would you choose?