Well, it’s my Harley Benton you’re talking about, I believe.
The best fretless I have personally played was a Roger Giffin Jazz which belongs to Felix Krish. It was well tasty.
The HB in no way equals that, but I was totally surprised by how playable it is and how good it sounds. Especially after I lowered the nut slots and set the truss rod for a nice flat board. Loads of mwah. Wilkinson pickups on it.
I have gone the active route with my basses now, and I am under pressure to stick to my one in one out policy by my wife, or I would keep it for when a Jaco moment comes over me.
A friend has a Vintage Jazz, fretted, and I find the Vintage and the HB comparable in fit and finish.
I hope this helps. I’m not advertising, I’m just really pleased with the results I get from a so called budget bass, and I believe others would be pleasantly surprised!