I have a fretless one with the black silicone(?) strings. It has lines. It's great. The strings took a couple of days to stretch to become stable. It still needs to be tuned after ~90 mins of play. I don't find that a hassle.
Thanks to this threadI I'll be play mine right after I post.
I purchased mine after seeing this vid:
Thanks to this threadI I'll be play mine right after I post.
I purchased mine after seeing this vid: