Well,
1. To begin with, what started this thread. It runs GREAT on SME.
2. Yep, faster in my experiance
3. More integrated product.
4. Deeper developer support and involvement.
5. Proven to be the most secure of the Nuke forks.
And yes, I am an MPN developer.
Give it a shot though, might be your cup of tea . . . might not be.
Garret