If you're a one-man team who does the whole stack on your own personal project, something like HAML might be for you.<p>However I have to say, in 10+ years of working on multi-person, multi-discipline web teams, there isn't one to whom i could see having recommending something like HAML.<p>Just raises too high a bar for designers and front-end developers (ie CSS/HTML specialists), for whom learning a new language is actually a fairly big deal.<p>SASS seems to be enough like CSS that it wouldn't necessarily pose a comparable problem to the designer brain. I could see designers grokking its basic features like variables and seeing them as a thing that gave them more power.<p>If my experience is representative, though, configuration might be SASS' achilles heel right now. Really gave it the ol' college try and my SASS files never QUITE seemed to compile how and when i expected. Compass was even worse in that regard for me. I am getting old though, so maybe i've just lost a step or two :) Anyone else have similar experiences?