I run a huge paysite Network and I have checked out all kinds of CMS options, including every big one on the market. But since I have a developer and a web designer I do not need the zillions of options many CMS products offer. So I am currently working on my own custom CMS and this is what I suggest for you.
However: if you want your sites to look like everyone else's, and to 'set 'n forget' your sites, then perhaps a professional CMS is what you need. But remember there is usually a monthly cost associated with most CMS products so if you do the math it's actually cheaper in the end to build a CMS for yourself with just the Features you need as opposed to have every option under the sun which you most likely will never use.
Have luck!
