Need help from tube guys to select a tube preamp

Hi,
I'm seriously considering mating a tube preamp with the McCormack DNA .5. I would like recommendations for a tube preamp, that is remote controlled, and in the $500-$600 range. I have no experience with tubes, but I have heard so many convincing comments that I think I am going to take the plunge with the pre section. I have been told that there is a Sonic Frontier offering that may be a good match. Thanks in advance for any advice.