I have always tried to use wordpress just because that's what I'm comfortable with. However it really depends on what you're looking to accomplish on your website. Each CMS has it's strengths and flaws. Personally if you really want to quickly find plug-ins and work on developing I believe wordpress is great for that for people starting out. I've always preferred going a custom route though, that's a bit more expensive obviously, but always good to control everything if very serious about a project you're working on for a long-term avenue.