A:Answer The biggest difference will be the data refresh rate. The DriveAssist 50LMT traffic data refreshes every 2 minutes and receives more than 1,000 messages every update cycle. The HD traffic data refreshes as often as every 30 seconds - that's up to 20 times more often than other analog traffic receivers. For a full explanation, please read this FAQ: http://bit.ly/2aAPucj Thank you for your interest, \tw/