One more Florida-specific tip: if you live near the coast or even just deal with humid, salty air, consider the materials for longevity. We had old steel windows originally (on a 60s house by the bay) and they rusted out. When we upgraded, we chose vinyl for its corrosion resistance. Aesthetically, we made the vinyl look a bit more 'traditional' by selecting a style with beveled edges and we added nice exterior moulding around it, so you can’t really tell they’re vinyl at first glance.
Our neighbor went with aluminum replacements (they wanted the thinner frames). They got a good powder-coated finish, but even so, after about 5 years, you can see a bit of oxidation and pitting starting where the sea breeze constantly hits. It’s minor, but it’s there. Our vinyl, meanwhile, looks brand new with just an occasional wash.
So in terms of design + practicality: if you’re in a harsh environment, the 'trend' or wise move is to use materials that will maintain their look over time. Vinyl and fiberglass are great for that, whereas plain aluminum might need more upkeep or eventually a refinish. If you do choose aluminum for the slim look, maybe get a factory-painted color that hides any future spots (like a bronze might hide specks better than white). We’re all about that low maintenance life, so vinyl was our choice and we tailored the design around that.