Todd H. wrote:
Variable speed seems to be contentious. Other benefits include that you can keep
your air moving and achieve better filtration as such, and supposedly
you get some added dehumidification benefits as a variable speed's
continuous air flow will keep things less humid in the AC season as
air is circulated over the cold coil in the periodcs the A/C is off.

..

The advantage variable speed gives with regard to dehumidification has
nothing to do with air being circulated over the cold coils when the AC
is off. How can the coils be cold when the compressor isn't running?

Variable speed can reduce humidity during periods when it's humid and
it's not very hot. During those periods, the blower can run at low
speed, which results in the air dropping more in temp as it passes
through the evaporator, thereby condensing more water without cooling
the house down a lot.