I maybe wouldn't spend that much at first if you are not sure.
For example, I picked up an old fretless Ibanez Musician a few years back and it's very nice bass, neck-thru and 2 pickups, active and passive mode. (roundwounds for me on it ) very easy to play. Might look a bit old school, but I like that.
I did have a lined fretless jazz at one point, but didn't get on with that, prefer just the dot markers for some reason.
If you can get to try a few basses out that would be best I think.