Buffer is simple to use and easy to learn. I've used Buffer, Hootsuite, Cision, Calendly, and SproutSocial and Buffer is by far the easiest to use.
Because of it's simple interface, Buffer is limited in how much social media help it will provide. If you only need to schedule things out and track basic analytics, it's great. If you want to monitor social media channels, grab user-generated content and do more robust reporting, Buffer isn't a great fit.
Definitely make a list of the features you want in a social media tool--they all cater to different needs. Buffer is no different. If you want an easy to use solution, Buffer is the way to go. Just don't expect it to fully manage everything related to social media. Buffer is a great value, so it's worth trying for a few months to see if it fits your needs well.
I use Buffer for a client of mine and it saves me hours of time that I would have to spend scheduling posts out on multiple platforms. One click and I can schedule posts to 4-5 platforms at the same time. It also gives me a great birds-eye view of which posts are performing well so I can optimize my content. One of the biggest benefits is the time-saving feature of the Content Library which pulls an RSS feed of related topics to post from.