Frankly, you will be hard pressed to find most muzzleloaders sitting in one shop to try.
Many shops will have the staple inline MFG's: Thompson/Center, Knight, Austin/Halleck, CVA and Traditions.
If you can get your co-worker to a Cabela's, they will likely have a larger variety of both In-line and traditionally styled ML's for the handling.
Here is a good list as well. About 70% of these are semi or custom traditional styles, but there are also inline MFG's as well.
http://www.muzzleloadingforum.com/ub...0&page=0#13134
Other links for price references;
www.cabelas.com
www.midsouthshooterssupply.com
www.dixiegun.com
Regardless of beginner or not, budget is really the second issue other than feel/handling preference as this will pretty much tailor what you walk out of the store with. Also, don't forget optics if desired and incidentals (powder, primers/caps, cleaning supplies, accessories, projectiles, and so on).
I would suggest starting without optics at first as that will only complicate the getting started with ML task.
I would say the Omega is a fine choice for likely the last inline you would ever need. The Encore is much more expensive, but if your friend likes centerfire, then the Encore might be the best choice as he could get centerfire barrels as well.
Hard to argue with Thompson/Center quality, support and warranty. Knight Elite or Wolverine would also be a fine choice.
Also mentioned, don't discount a traditionally styled ML either. These are a huge amount of fun, very effective and almost as easy to maintain.
Lastly, just to get his feet wet with a low end inline or traditional ML might not be a bad idea. No optics, just get the low end model that he likes the handling of and kick the tires.
In the event that ML is not his thing, he won't have huge money tied up in one. Also used can be a good way to go for the first ML. There are many nice ML's in shops for reasonable prices.
Once you narrow things down to specific styles, use the search utility here to flush out details about specific models and manufacturers.
Good luck!
