Yeah no spaces for me- if you wind, then wick, prime then fire you will see big bubbles form in the gaps of a spaced coil. Hence more spit back. Tightly wound, no spaces, much smaller bubbles hence less spit back. School of thought is that spaced coils give more surface area therefore more clouds, but if you look at mactechs tensioned coil winds he is getting good results with even tighter winds than I do.
Everything in vaping is down to how you like it, for me tight winds is where it's at, and spit back is minimal. YMMV, but try it out, wire is cheap.
