It's always hard to choose when having to develop CMS based websites : there are litteraly thousands of solutions out there, and even when you think you've found the ultimate software (have a look at silvertripe), a new one comes in that changes the whole story. That might be the case for Digitalus CMS, whose objective is not to be the best out there, but to provide a foundation for solid web site development. As such it is a good start to rely on popular technologies, such as Zend Framework and Jquery. We'll never be able to decide which is best, because the final solution is the one that you're the most happy to work with : as such Digitalus is good bet if you have experience with Zend framework and wish to start with basic features such as suearch engine, page and menu builders, privileges management. And in the end, software keeps evolving, but if one can judge from other features described on Digitalus website, this one has good reason to convince you to try it out !