Hey! I got my 4th bass a month ago. A used Yamaha RBX6JM (John Myung). It's my first six'er ever and my previous basses were Ibanez SR305, SR505 and SR905. As far as I Understand all are in the commercial narrow string spacing league (around 16.5mm I think?). I'm not planning to sell the Yamaha very soon (unless I get a nice offer) but I want to keep an eye on what's next (drooling on ebay or TB classfieds, you know, right?) and I just noticed how important is to me the string spacing. Before the RBX6JM I tried an Ibanez BTB676 and it felt odd in my hands (I'm a 5' 7" tall guy). Of course it was just playing 15 minutes at most and I could get used to a wider neck, but I think that it would be wise to look first at options that won't modify my playing that much. Do you have in mind six string specific brands and models so start looking at? I got my RBX6JM in pretty nice shape for $550 and unless I hit the Jackpot I would think on spending $850 at most for my next bass. If this helps, I play in two bands: One plays mainly 50's to 70's rock and the other is a jazz trio (in where I feel literally like I just took off the training wheels from my first bike, I started attempting to play since 4 months ago). Thanks for your feedback!