I've got a 21-speed Trek city bike exactly like this:
San Francisco is hilly, so I needed a wide range of gears--but that's available in almost all types of bike. The primary factor influencing my choice was the horribly rough pavement (and the streetcar tracks) that characterize my five-mile daily commute along Market Street between the Mission/Castro and Financial Districts. I needed to balance good stability and durability over rough terrain with the need for speed. I'm commuting, after all.
City bikes (a.k.a. "hybrids") have bigger tires and put the rider more upright than road bikes, so they offer better stability and better withstand rough terrain than track bikes, but smaller tires than those on mountain bikes, so they get going faster with less effort. It's a good compromise for me.
I didn't add much --I installed (removable) LED head and tail lights, and initially installed a u-lock holster onto the stem which I have now removed because it didn't hold the lock securely enough.
I didn't see a price for the Breezer bikes you linked, but I paid no more than $400, not including the custom accessories, for my Trek. I don't think you need to spend a lot of money on your first bike. Just make sure you get a professional fitting at a reputable bike shop and go with a name brand ride.