Neither; I used to use SCSS, but have moved on to LESS (http://lesscss.org/).

One thing that always annoyed me with SCSS is having to explicitly tag classes with the `@mixin` keyword before being able to use them elsewhere as a mixin. LESS doesn't make you do that.

the @mixin delineation is quite deliberate. See Nathan Weizenbaum's comment at the bottom of: http://nex-3.com/posts/83-sass-and-less#comments

Also, one of the most powerful features of Sass today is @extend, which is something that Less definitely does not have: http://sass-lang.com/docs/yardoc/file.SASS_REFERENCE.html#ex...

Thanks for the info. I actually do very little with CSS (should have mentioned that / written with a more ignorant slant); in fact the only reason that I started using Less is because of that simple mixin feature.

I can definitely now see that Sass/SCSS is where it's at if one needs to do anything non-trivial with CSS. Guess I should really get back to using it over Less, as the basic syntax is almost identical anyhow.

Check out Compass when you get a chance and prepare to have your mind blown: http://compass-style.org/

As far as Sass vs. Less goes, I think it's great that both projects exist and are being improved and adopted at such a rapid pace.

Less certainly borrowed some early ideas from Sass, and in turn SCSS syntax almost certainly exists because of Less.