This question is a little subjective, however, it aims to give me a bit of information about whether it is better to build or buy.
My company is looking to enter the world of CMSs for our clients websites, do we provide an open source one, or do we build our own model from scratch?
If you buy, which do you use?
If you build, how does your architecture differ?
EDIT: The CMS we are looking to use isn't to maintain our own website, it is something we can offer our clients and pinned onto websites we are custom building for them, it needs to be something that we adapt and manipulate easily for many different website designs and purposes.