The only CMS I've heard good things about is SiteFinity from Telerik. My company evaluated it temporarily but decided to go with Joomla instead, primarily due to cost concerns. However, we do use the Telerik RAD Controls within one of our projects and I must say I'm extremely impressed with them.
I would, however, avoid the Ektron CMS. We've had nothing but bad experiences with it, one after another. Their customer support is atrocious, I've had co-workers spend multiple hours at a time on hold, and rarely have we gotten answers from the first level support guys. The web interface is slow and buggy, un-usable in IE(I know that isn't really saying a whole lot).
The document management system handles Word documents in the most bizarre fashion. There is no easy way to just straight up replace a document. However, this is possible with every other file type hosted on our server (PDFs, PPT, etc...).
Every single one of our programmers and content editors despises that CMS. So much so that our IT Manager has made the decision to replace all our Ektron based websites with Joomla. Yes, it was actually cheaper to hire a PHP developer and move all the content by hand (due to the completely different content structure) from Ektron to Joomla, than it was to continue using Ektron.
Beware and stay away.