[cowmoo728]

I don't like riding heavy bikes with mechanical brakes because they never stop as reliably as good hydraulics. The ultimate limit is always the tire grip on the road, but it's easier to control properly set up hydraulic disc brakes to hit grip limits and get shorter stopping distances. Particularly down a steep hill.

[zik]

You can get up-rated caliper brakes with very good stopping power, and in fact that's what comes on my Gazelle ebike as standard.