Texan, you sound as if you've been convinced, and I'm just repeating what others have said, but....
I used pyrodex when I first started shooting front-loaders. I've used it only occasionally since I moved to Indiana eleven years ago and discovered several places that sold real BP. Since I shoot mainly flintlocks and pyrodex doesn't work well in them, I have to keep BP on hand and it doesn't make sense to buy another product that, IMHO, is more difficult to ignite -- in percussion as well as flint -- and still requires a messy clean-up process after the day's shooting is done.
I built percussion guns for my niece, nephew, and their dad, and he (my brother-in-law) bought pyrodex at Wal-Mart to feed them. They all had numerous misfires. I finally bought a case of Skirmish black powder and gave some to my in-laws, and, despite its being (apparently) an off-brand of some sort, the only misfires that have happened to them since were due to shooter error (oil in drums, old powder residue allowed to clog the nipples, that sort of thing).
Obviously, if you've used pyrodex for two years and been satisfied with its performance, I'd say you might not see a reason to change. If you get the chance to acquire some real BP, though, do. I seriously doubt you'll regret it.