Brian,

Thank you for your foresight about the hobby's need for more accurate, higher quality freight car trucks, and for all the effort you put in to making them a reality.  When I started building models, the most we knew about trucks was "Bettendorf" (meaning steel integral journal sideframes), Andrews, archbar, caboose, and Vulcan and roller bearing.  But those classifications pale in comparison to what we have today, and your offerings have spurred other manufacturers (Walthers, Rapido, Tangent, Moloco, Tichy, Exactrail, Atlas, Intermountain) to jump in and offer even more variations.  

So, thank you again for enriching our hobby!

Todd Sullivan