I just activated the XRt-12 Polk XM tuner (so generously provided by Matt Polk and polkaudio at polkfest05) and am generally impressed. After using a portable docking tuner (sony) in both the house and car I can say it is very nice to be able to SEE the display on this one. Very nice control layout and remote also. I have it on my work system at the moment but will write a review once I listen for awhile on my home system.
THANKS MATT POLK!
Edit: Went with the 3 year subscription for $9.99 per month.