I can vouch for this one. The low upper limit helps to ensure things run as smoothly as possible, especially once this one picks up steam. You probably won't make a hell of a lot with this one, but it looks like a promising way for a steady drip of btc.
https://blockchain.info/tx/4594cf0a5873eaacf71164954d9d9dc5edd0ca6c8387aa4fcf0cf57960863be8