r306, it depends where you live.
In Florida approximately north of a line connecting Sarasota to Fort Pierce? Absolutely. Nowhere in Florida actually gets cold enough to justify a real, honest-to-god FURNACE, but the area north of approximately SR-70 (and especially north of I-4) usually gets colder for longer than 8k-10k heat strips alone are really appropriate to handle.
South of SR-70? A heatpump isn't really BAD, but you probably won't use its heating capabilities often enough to feel like the higher cost is justified. It's more energy-efficient than heat strips... but the payback horizon somewhere like Fort Lauderdale or Naples is so far in the future, your AC unit will probably crap out and have to be replaced before you've actually saved enough energy to even PRETEND you've broken even on the cost difference.
I live in Fort Lauderdale. I do commercial HVAC design. *I* didn't bother with a heat pump, because I feel like I got more value for the money from a variable-speed fan coil and a dual-stage condenser unit than I'd have EVER gotten from a heat pump. Keep in mind also that if you want dual-stage, your heat pump options pretty much narrow down to one single choice per vendor-family, and you'll pay DEARLY for it.
IMHO, the single best upgrade you can do if you're in South Florida is a variable-speed air handler/fan coil. It'll enable you to have MUCH better humidity control when paired with an advanced controller (note: Nest and Ecobee aren't necessarily going to wring maximum performance from it, especially if it's a "Carrier" brand.
Florida north of Ocala/Daytona: heat pump likely to make you happier than dual-stage.
Florida south of Sarasota/Fort Pierce: dual stage likely to make you happier than heat pump
Florida BETWEEN the two lines above: it depends on your lifestyle and preferences. If you open the windows when it's 70 degrees outside and rarely use AC in the winter, you'll probably get more value from a heat pump. If you run your A/C 12 months/year, and view 50% indoor humidity as intolerably high, get the dual-stage.
If you're rich and honestly don't care about price, get a dual-stage heat pump... but don't kid yourself. If you're in Florida south of approximately I-4, you aren't likely to recoup even a fraction of the higher purchase price from lower electric bills. Somewhere like Naples or Fort Lauderdale, you will LITERALLY never save enough electricity to even be able to PRETEND you've come close to breaking even, because modern central AC units crap out and die from coil rot after 6-8 years. The days of a new central A/C unit lasting 20+ years died when nature nazis banned CFCs. Today's refrigerants are corrosive (older refrigerants weren't), so nowadays, your coil will literally eat itself from the inside out... and they're at MUCH higher pressures, so a slow leak you could have mostly ignored 25 years ago and just added a few pounds of freon every 2-3 years will NOW depressurize your system's refrigerant loop to the point of not cooling at all within a matter of DAYS.
North of Florida, the cost-value equation for heat pump basically comes down to, "does it get cold enough, long enough, to need a real honest-to-god FURNACE here?" If yes, skip the heat pump, and just combine a furnace with normal central AC. If no, get the heat pump.