i am currently using the avic z1 unit. it has the xm sat tuner unit hooked up. the unit has a subscription required monthly to have the live nav traffic to work.

does the new avic z130bt unit have that feature free? no monthly subsription needed?

whats the difference between the z130br and the z120bt?

the cost seems like the 130 is less than the 120 but the listed features seems to show the 130 has more. im not sure what im missing in the info?

there's a lot of info on this on the CES2011 section.

Yes, it has free traffic. Check out the CES category for all the info.