Don't discount Traditions rifles as an option. I have the PA pellet 50 cal. flinter with nickel barrel and camo stock. I have been told that it has a much bigger lock than the Lyman deerstalker and it does have fiber optic sights whereas the Lyman has standard notch style sights. The Pa pellet has a removeable breech plug and flash funnel technology, which brings a small diameter powder channel through the plug to the large touch hole for reliable ignition. I have had very good reliability with ignition in mine.
See it here:
http://www.traditionsfirearms.com/eshop/10Browse.asp?Category=Muzzleloaders%3A+PA+Pellet+F lintlock+%28Side+Locks%29
Buy one here:
https://www.dnrsports.net/miva/merchant.mv?Screen=CTGY&Store_Code=DSC&Cat egory_Code=muzzleloaderstrd
I paid $230 for mine. A decent deal IMO.