The Switch to Rails 3
Switching to Rails 3 for a recent project wasn’t an easy decision. On an initial investigation, too many GEMS lacked support for the latest offerings of the community. However, the excellent new router and ability to integrate more easily with a variety of JavaScript frameworks made switching worth the costs (thus far). If you are interested in switching, be sure to http://www.railsplugins.org/ and see if compatibility will be an issue for you. Otherwise, go for it!