One thing you should probably do first is isolate these into their appropriate buckets. I see this a lot where people will mix MVVM frameworks with application composition frameworks. Once you have them in the appropriate buckets you can start to pick one framework from each category and combine them into what you consider to be the best scenario.
Application Composition
- Prism (using any IoC container: MEF, Unity, Ninject, Autofac, etc. There are a few things that make MVVM easier with Prism, but I wouldn't call it a fully featured MVVM framework... it's primarily a modular application composition framwork.)
- MEF (MEF is actually able to do application composition out of the box. It's often dismissed as just an IoC framework, but it is deceptively powerful.)
MVVM Frameworks
- ReactiveUI (my favorite)
- Caliburn
- Caliburn Micro
- MVVM Light
This will help you make a decision, I think. You can pick and application composition technology you like and an MVVM framework you like and be off and running to the races.
As for articles, I don't have too many. There are a lot of good articles on application composition with Prism (that's pretty much its job), but here is a good article on application composition with MEF by itself:
http://blogs.microsoft.co.il/blogs/tomershamam/archive/2009/08/11/wpf-mef-declarative-composite-ui.aspx
You should also check out Glenn Block's series "Building HelloMEF" on his blog. I couldn't find a comprehensive list (he wasn't consistent with his tagging), but here is the "MEF" tag. Lots of good stuff here:
http://blogs.msdn.com/b/gblock/archive/tags/mef/default.aspx?PageIndex=1
