I haven't really subscribed to a whole lot of people yet. I don't enjoy subscribing because I get overwhelmed with all the input and it takes far too long to sift through everything (an experience I've discoverd with Twitter). I really do prefer the heart-system, but there are three people I've come across where that just wasn't good enough:
1. RegularJOE -- This should be self-explanatory.
2. xanlee -- The lovely xanlee has a knack for the written word. She's an excellent writer and to top it all off, she's easy to talk to. She comments back and is one of the most encouraging people I've come across on this site. (You should all go check out her Sad Octopus story and its sequel)
3. bluewave -- Another fantastic writer who has some of the best tiny stories on the site. And they are indeed tiny. She alone could publish a novel of tiny stories she's got so many. A lot of them lean towards being sad, but they're great plays-on-words. Go check out her RECords especially: "The Sad Onion," "Hot Flash," "Gardening New Tiny Story."