Is the primary benefit of SASS to reduce development time? I find it slows me down having to wait for it to re-parsed on every pageview during active development. Does it offer any other tangible benefits?
Try using gulp, gulp-sass (libsass) and gulp-livereload (LiveReload.) It's almost instantaneous and you do not need to reload the page to see your changes. There's also a Grunt equivalent tool chain, but I find gulp faster and prefer to use code for configuration rather than using Grunt's giant config objects.