Better mounting options for a Garmin.
For example, I use a K-Edge out front Combo for mine, which is super sturdy, and has a light bracket underneath for my Sirius. Tidy bars are a good thing.
Also, as above, they’re designed to be used outdoors, not just get a splash of frappacino on them in Hackney, dahhhlinhg. ;) Work well in the rain, with gloves on, etc.