I'm new to the flintlock game, so I'm not a wealth of knowledge or experience, but I picked up a T/C Firestorm and really like it. I'd love to get a more more traditional-looking one like the Lyman Great Plains someday, but the Firestorm is a great one to start out with. I did a lot of research, on the internet, talking with more experienced family & friends, along with various gun shops, and the majority of these sources suggested the Firestorm to me as a beginner for a couple of reasons: a) it's very convenient to clean with it's removable breech plug, synthetic stock, stainless steel barrel. b) ultra-reliable ignition. c) T/C makes a great product and backs it with a lifetime warranty. d) I found one with the stainless steel barrel brand new for $420. I'm thrilled with my decision to pick up the Firestorm. Although it's not as traditional looking as others, it'll be fun to play with for a few years until I can convince the wife to let me get another!! Good luck!

Here's the link in case you're interested:
http://www.tcarms.com/firearms/mzModernFlint.php