Concrete CMS vs WordPress: Which is best for you?

concrete5 has increased our client's enjoyment of the editing process and has enabled us to efficiently deliver sites that meet a very wide range of requirements.

Not enough themes and addons for working with multiple clients, no way to test addons prior to purchase, unless you purchase and then return the product (which would really annoy me if I was a developer).

The most useful and unparalleled part is the vast knowledge base built around it, for years developers tinkered and built many useful plugins and addons and code well written so that we could get almost anything based on WordPress - stable and functional.

Only issue I have seen with WordPress is sometimes the syncing/updating of data on our WP pages, from our source software, can take some time.