Howdy ...
I have not really done much investigation into R2.
We have just upgraded to SQL 2008 from SQL 2005. With our workload, I do not see us moving to R2 in the near future. In fact, if 2011 arrives on schedule, I do not see any reason why we would upgrade to R2.
Is R2 just a nice to have, or is it a necessity ?
ciao.