My sources say the former, though I can't speak from personal experience.
Note that Luca Bella is participating in the Miami Spice promotion, and while I don't know if it offers much (if any) value over regular menu prices, I throw it out there.
Hope you'll post a review after you go to either, as I'd like to find a good local Italian myself.
re: non sequitur
Dinner @ Luca Bella was a carbon copy of Matteo's. Good food and lousy service (the wait staff was busy watching the Olympic basketball game) and screwed up our order. Their Miami Spice offering is no bargain vis a vis their regular menu prices. In spite of the screw ups the food was excellent. Our party had Eggplant Parm, Salmon and their "famous" Country Chicken (the size of this dish could have served all 4 of us).