Ben,
I have every one of Bill and Lynn Lyons' payware aircraft. I love every one of them. For $12.50 they give you a lot for your money, including several files that you can use or not, such as their water textures, a file that removes the red lettering like "Brakes" and such, or "Parking break" when you turn that on.
Not only that, but the Travel Air package comes with a few variations of the Travel Aircraft, and scenery files such as a train that you can chase if you so choose.
The one thing that stands out with their packages are the little detail "easter eggs" of which I will not get into, but are an excellent touch. They are best found when flying around then clicking on the various things around the cockpit.
Travel Air is a great package, though my personal favorite is the Grumman Goose
