I have a SL2 and a Lynx in my car and I definitely have a love for the Lynx, but XM coverage here in Central Maine is spotty at times, much like you mentioned in Montreal. My Sirius coverage is consistently good, 0 dropouts on my western/eastern commute on US2. I lose XM for 1-2 minutes out of the hour trip. I haven't really run into any audio quality issues, but it's likely I listen to different things than others do. I listen to Howard 100, O&A's channel, Octane, sometimes Hits 1, 70s on 7, 20 on 20, Rockbar, and a few other things. With talk radio, sound quality isn't exactly a high priority.