Good question Ron. There are many variations of watercare available to you. Being from Canada, we are limited to the options that are available to my friends south of the boarder (I don't know if this includes you or not) so I'm sure someone could add to this with their opinion also.
I'm an advocate of proper water maintenance and regardless of the system you chose, properly balanced water should have no odor to it whether you chose chlorine, bromine or another alternative. Learning what to test for and having a proper system laid out by your dealer is far more important than the product you use in my opinion. All systems work well when followed correctly.
I've used bromine for many years and experience little to no odors in my spa. I also was on chlorine and found that enjoyable other than it seemed a little harder on my wife's skin than bromine.
Spend a good amount of time asking your dealer what they have and why they recommend it. Ask around here and elsewhere and I'm sure you'll find a product that works well. Ozone isn't required with any of the sanitizers but you will still need some sort of vent/fan in that room for humidity.
Steve