I’m not really interested. I use Apple Maps almost exclusively but occasionally launch the onboard system just to see how it works. I’m in the Baltimore area also and it’s pretty good as you noted. But it’s not what I rely on.Before you decide to opt for SXM traffic, check the coverage areas. I live in the Baltimore-DC I-95 corridor and it works quite nicely. My son currently lives down I-81 in Christiansburg, VA, It proves to be worthless down in that area. More than once have been caught up in an I-81 traffic jam that SXM did not report.