My comments are not on why I am selling one, but why I decided against buying one.
For the past year or so I thought about picking up a Music Man Old Smoothie, and finally was able to play one in late 2017 that was for sale at Matt Umanov Guitars in New York City, just before they closed their doors. I ended up not buying it.
I bought a Stringray back in 1987 and its been a fantastic bass. I stopped playing for about 10 years because I lost favor with its bright tone (I always had roundwounds on it). Then I decided to put some flatwounds on it, which really tamed the tone, and the bass was brought back into rotation (to the Bass Whisperer .. thanks for this tip!).
Fast-forward to early 2017 and I am reading the history of how the Old Smoothie came about, why it sounds the way it does, and mostly positive reviews on the bass. My chance to play one came at Matt Umanov's.
I veto'd the purchase because (1) the Old Smoothie didn't feel as "substantial" as my 1987 Stringray, largely because it weighted noticeably less - not because it lacked anything in terms of quality-of-build; and (2) while I say I have lost favor with the Stringray's bright tone, the Old Smoothie was a little "too smooth" and lacked some of the tone characteristics that drew me to a Stingray 30 years earlier. Its tone had more in common with my Fenders than my Stingray.
The Old Smoothie that I tested was a great bass, and if I hadn't already had a Stringray at home (an and old Jazz Bass and Precisions from the '60s and '70s) I would have bought it.