One of the best things I like about Tuts+ is that it is broken up into a broad range of subjects. I follow their CodeTuts+, DesignTuts+, WebDesignTuts+ and WpTuts+ because those ones are the ones that really interest me.
I like that I can target the areas that I want, to remove clutter from my feeds of those I don’t. One of the downsides if you are using this with a reader and are subscribed to multiple feeds from them is duplication. If it relates to multiple feeds it is posted on each, which is good that you won’t miss anything, but will often result in the same post being displayed several times in your feed.
I do have their Premium subscription, I love watching their courses and videos. It’s a great learning tool and a fun way to get new information.