WordPress is the most beginner friendly and easy to use CMS. While it can have performance issues at high traffic and it can get bloated with features, it's still the best option for any kind of business, without a dedicated web developer to maintain the website. Updates come out periodically for free for both WordPress and the Plugins. It's also easy to change without any coding, both the front-end and the back-end. You can also add or remove features fairly easily. If you strike a good balance between features, website speed and front-end elements you will get a very powerful website for your business.