I was in a very similar situation, choosing between a 4H and a 4HS with about £1.5k price difference - 2017 on a 66 plate so that you pay no road tax!
Ended up going for the 4H as the previous owner had already installed a towbar (use it for my bike carrier) so figured that was an even greater cost saving
Basically it's down to your personal preference, they'll drive the same. If you ever use intelligent cruise control go for the HS, also the other safety features may lower your insurance, so check that before you buy the car
I think both have the electric heater, heated seats, app with pre-heat/cool function & ev priority button, my 4H does