Hub drive will deliver power when you press a button. Mid drive will sense when you're pedaling, so pedaling is what kicks the motor on. If you want to pedal all the time, you may want mid-drive. Hub drive makes it harder to change the tire.

This isn't totally accurate, my hub drive bike has both a pedal assist and throttle for when I need a boost up a hill. It does make it harder to change the tire, but it's still totally doable, ive had to do it twice and I suck at bike repair (this is gonna be model dependent though ofc).

There are differences between the two designs so OP would definitely research and test ride both types if possible. I would no forgo the flexibility of having pedal assist + throttle available to me.

85-90% of my riding is on MUPs, residential bikeways, and "good" bike lanes. My class 2 ebike is great for all that (limited to 20mph). if I had to ride on busy roads more, or longer distances, I'd go for a class 3. I do want full suspension even I upgrade to my next ebike.

Also, make sure it has a quality bell. You're often going fast enough that you're gonna startle pedestrians when you approach from behind, and "on your left" is always a mess, even at traditional bike speeds imo. If you give people 5 seconds or so of warning as you approach, it's not as much of an issue. This does not preclude riding at a safe speed for the conditions of course, aggressive riding, especially without allowing people to your presence, is gonna give your local jurisdiction plenty of momentum to ban or restrict ebikes.