Jack Daniels is the one that's most popular among the 3, and with good reason. It's what I prefer too as well, although it can be a bit pricey especially the more "aged" whiskies of the brand.
@Shine_Spirit, I think it's because that's the most popular and accessible brand, since it's an American brand. Johnny Walker is the 2nd most popular brand since it's a Scottish brand, so it's imported and therefore more expensive.