Currently using Ops Mgr SP1 and debating whether or not to upgrade to Ops Mgr R2?
Not really sure if you fully understand what’s new w/ R2?
Go here to learn more about Ops Mgr R2.
When you are done, read through the number of issues that are fixed in System Center Operations Manager 2007 R2 and you will realize that it might just be worth upgrading.
The Operations Manager 2007 Upgrade Guides provide some valuable insight and steps to take when preparing to upgrade to Ops Mgr R2.