Shuman's professional model DS-128 features a gold brass bell that is relatively large for the horn's size. It's paired, though, with the narrowest tuning slide bend I've ever seen on a trombone. The neckpipe's and upper cork barrel's extreme angles combine to give the angled slide direction Shuman wanted. When held, the slide points out to the right at what Shuman thought was a more ergonomic angle. This is the only instrument I own that I don't play. While I don't have much of a need for a small bore instrument on the job, I also find the "improved" ergonomics so odd that it's not worth the effort.