sweng85,
Just like other said, it depends on your situation and where (financially) do you except to be when you're about to retire.
This should help:
Roth IRA Conversion
Roth IRA vs Traditional IRA
Roth IRA Investments
and
Roth IRA Tax
Cheers
summer,
I don't believe you have to pay RMD
You may want to read up on Roth IRA taxation
Roth IRA Tax
or
Roth IRA Investments
I think I saw something on RDM and taxes there
Cheers