Jupeater currently lists three Mexican restaurants, and they cover three distinct occasions: a quick taco stop, a neighborhood cantina, and an upscale Harbourside patio bar.
Taco Maki, in Abacoa, is built for a fast, casual meal - order at the counter, eat, move on. Casa Tequila, out in Jupiter Farms, is more of a sit-down neighborhood spot. Calaveras Cantina, at Harbourside Place, is the most polished of the three, with craft cocktails and Intracoastal patio seating that makes it a legitimate date-night option rather than just a casual Mexican dinner.
If you're deciding between the three, distance and occasion matter more than menu differences - all three do tacos and margaritas well, but only Calaveras Cantina is really built for a longer, drinks-forward evening out.