Choosing a CMS: EPiServer vs Orchard vs SiteCore vs Umbraco
Increasingly, I have noticed the number of Content Management Systems in use. I have some familiarity with SiteCore. I have read some literature on Umbraco. I only just got wind of Orchard the other day. I have only heard positive feedback about EPiServer. I am soon to move into a role that uses it.
Do these differ vastly in features and price? What has led you to choose one (or several) over the others?
EDIT
I did a brief review of so-called free CMSs here: On Free Microsoft Compatible Content Management Systems
Reasons I ditched Orchard when developing a 50k page website:
The Orchard CMS import tool is simply too slow. It would only accept small batches at a time. Initially, it took eight minutes to import 1000 records. So, working on that principle I expected that it could take seven hours to import all the records. Unfortunately, I started to receive performance issues as more records were inserted into the database. I even started to reduce the batch size, which helped only temporarily in the early stages. (See Saying no to Orchard)
Answer
I can only comment mainly on Sitecore and a bit on Umbraco from my knowledge of others using it:
Sitecore is an enterprise level web CMS with an "enterprise price tag." It's very extensible, has a lot of developer/community support, and is very developer friendly. The structure of content is based on a tree of nodes with parent-children relationships. Sitecore is well known in the WCM community as a leader in content management and is rated very well by companies sch as Forrester Research, etc.
Based on my previous research and conversations with friends, Umbraco is very similar to Sitecore. It has a lower price compared to Sitecore but its not a complete rip off. Umbraco is also built on ASP.NET like Sitecore.
Here's a three-part series on Sitecore vs. Umbraco from a developer.