A used GWB35 will get you the closest, a schecter stiletto 5 fretless will be close as well. I prefer the GWB35 to the stiletto, but both sound killer. I think the biggest thing that might be a deal breaker are the the string spacing on the gwb as its tighter than other 5 string basses I've played.
With any fretless bass you'll have to spend some time playing it and adjusting it to fully get it dialed in to your preferences for intonation, action, relief, nut adjustment, pup height and all that stuff but I'm sure you know that.
What are your tonal goals? Whats your play style like?
I think some of the bigger issues faced by trying to find a decent mid level fretless is so few of them end up in a place that we can test out. The GWB35 is the only fretless 5 I've seen out in the world and after I played it, I bought one used from another TB member.
With any fretless bass you'll have to spend some time playing it and adjusting it to fully get it dialed in to your preferences for intonation, action, relief, nut adjustment, pup height and all that stuff but I'm sure you know that.
What are your tonal goals? Whats your play style like?
I think some of the bigger issues faced by trying to find a decent mid level fretless is so few of them end up in a place that we can test out. The GWB35 is the only fretless 5 I've seen out in the world and after I played it, I bought one used from another TB member.