In my guitar shop browsing latley I've tried a few lined fretlesses, and a few unlined fretlesses, and I've made the strange observation that fretlines seem to hinder my playing more than they help. When I'm playing on a lined fingerboard I seem to have a tendency to stop listening to the sound and only focus visually on the lines themselves. This leads to dissapointment when I'm not sure how the instrument is intonated, etc. Additionally, the lack of position markers on the fingerboard of most fretlesses messes me up as well, I find myself counting the fretlines and making all sorts of crazy mistakes. On the unlined boards, I use the side position markers as guides and subdivide the fingerboard in my head. I seem to be much more able to focus on the pitch of the notes I'm playing, and thus I seem to play more in tune over time. However, this greater focus on pitch has it's price: slower playing. considerably slower. And on occasion I'll still mess up horribly and have to slide up/down towards the note i want. So what's better? Having to learn not to lose focus on pitch and become accostomed to a lined fingerboard? Or playing slower and becoming frustrated by the occasional mishap with an unlined board?