Congrats on the Purchase, the Spirit is a great spa. I think you did pretty well, I would have been over $10k for that spa.
As for the chemicals, that is a personal preference. If you have never smelled bromine, do so. It has a unique smell and if you don't like it, that will probably be your deciding factor. The @ease is a newer system and so far I have had good luck with it. The advice I can offer would be that in the directions that say you only have to shock once a month, that will not be sufficient, do so once a week like you would with any other chemical system. FWIW, all hot tubs I sell I give the customer the option between @ease and bromine. Typically unless my customers already had hot tubs with bromine, they go with the @ease.