We recently switched multiple clients over to StarChapter. This decision was based on a few factors, one being price and the other being use of use for volunteers. StarChapter has all the bells and whistles of other AMS's but is priced more for nonprofits. For those of us that work with volunteers, we know that trying to teach them how to utilize the back-end of a website can be difficult. With StarChapter this process is seamless, updating pages is easy. They also offer to all administrators access to video tutorials and FAQ's.