They look very similar to smashwords. I don't think either is a bad choice, my only thoughts are who would do a better job of distribution and I don't know the answer to that.
They want you exclusive for 10 years, if I didn't read it wrong. Might be a bad thing. Not sure how I feel about that. Yearly fee and 100% profits (net). Could be worse.
Do not limit yourself to one website. Most of the novels sold on line are sold on Amazon. E-books are now outselling physical novels by at least 10 to 1. You must have a presents on Amazon to even hope for success.