You can pick your friends, you can pick your CMS, but you can’t pick your friend’s CMS.
Choosing a Web Content Management System should not be done lightly. It’s going to be with you for some time and you don’t want to be forced to switch sometime down the road. You may have experience in, and use a CMS that works wonderfully for you. But be careful before you recommend that system to someone else. Your pick may not be their solution.