I like to keep my websites extremely light and fast, but of course I need some kind of user tracking and analytics.
It seems like Google Analytics always takes significant enough processing time that I'd like to replace it with something faster (and/or hosted locally), perhaps having less features.
I really only care about these metrics: browser, OS, referrer, and # hits per page on a given day or week.
Does anyone have any good suggestions, or is Google Analytics really the best option?