Sass vs. LESS
"Which CSS preprocessor language should I choose?" is a hot topic lately. I've been asked in person several times and an online debate has been popping up every few days it seems. It's nice that the conversation has largely turned from whether or not preprocessing is a good idea to which one language is best. Let's do this thing. Really short answer: Sass Slightly longer answer: Sass is better on a whole bunch of different fronts, but if you are already happy in LESS, that's cool, at least you are doing yourself a favor by preprocessing. Much longer answer: Read on. The Much Longer Answer The Learning Curve with Ruby and Command Line and Whatever The only learning curve is the syntax. Winner: Nobody Helping with CSS3 With either language, you can write your own mixins to help with vendor prefixes. In Sass, you can use Compass, and Compass will keep itself updated, and thus the prefix situation is handled for you. In LESS, there are also some mixin libraries battling to be the best. See that?
Related: HTML / CSS / JS