If they are priced the same get the RoadTech as it has a few things that the Garmin doesn't have, like you can easily download maps from the Harley Trip planner, the preloaded dealerships and I saw yesterday they are offering free maps for life (which is $90.00 from Garmin). All things considered if price is equal it is the same unit so get the HD specific items. If HD's is more weigh price versus features, your call.
Not to highjack but where can you download the list of dealerships for the Garmin?
Men fight for freedom, then they begin to accumulate laws to take it away from themselves. ~Author Unknown