O/R mapper LLBLGen Pro or do you know better alternative in .NET?

[cyberjoe]

What experience do you have with O/R mapper in .NET?
I need to choose one for use in my company
Which one is the best for you?
I have seen lots of positive feedback about this one:
LLBLGen Pro
What do you thing about this? Is it good or can I find better alternative?

Regards
cyberjoe