Don't leave the dock without the XM functionality it's worth every penny....... Glen hit the nail on the head go with the 3206 no doubt.
Here's 2 pictures the 1st is my Garmin 376c with XM Weather functioanlity. The 2nd is a shot of my 2206 and the new G2 Cartography. I use my 376c in conjuction with my 2206.