When it comes to ceiling fans it is mostly a case of your budget and preferences towards the design.

AC vs DC? Pros of the DC is it is less noisy, more power efficient and usually less resistance. The cons are the pricing which is usually more expensive than an AC motor one and that translates to both purchasing and repairs, the other con is it is more sensitive to power surges and a bit more sensitive.

KDK vs Panasonic? Panasonic owns KDK and their major components are identical. My KDK remote in the living room can also operate a Panasonic fan at the dining area.

Most recently I needed 2 smaller sized fans, I bought a Rubine Ampio and an Alpha Vannus Pico. I am very satisfied with both and cheaper than buying an equivalent KDK or Panasonic.

K14XZ or K14YZ is just cosmetic 4 or 5 blade. No yuragi. Standard blade only.
If got budget get the V touch Jr instead, the blade design produce better wind. The place where u want a prettier fan can put Sensa 4.

KDK Kaze compare with KDK Sensa 5. Size is huge 60" so wind very good. But your mounting clearance must be enough to support 150cm (60" fan). Some developer assume you need to put full height cabinet in all rooms and as such the clearance only ngam for 140cm fan, 150cm one will dig a trench into the wall. Kaze should be super atas model. Sensa 5 has everything you need I guess.

KDK Sensa 4 atas model than the V touch Jr (4 blades and 140cm for both). Sensa 4 more gear in the gearbox (9 vs 5 spd) and DC motor. Both got yuragi. Both also function well.

I would analogy them as:
the cheap 3 blade regulator: old 1970 mustang. yes still carburetor and look outdated but wind damn good because of the 60" 150cm
the standard remote 4 blade K14XZ or YZ: Iswara 1.3 (the model before BLM)
the vtouch jr: 2003 camry 2.4 (exceeds normal use expectation just that it has outdated 4AT gearbox, most atas 140cm fan that still have AC motor)
the sensa 4: E 300 BlueTEC Hybrid (pretty and bling bling DC motor)
the kaze or other stuff: 2020 AMG tuned merc GT 63S (modern fast ride with price to match)

IMO, the vtouch jr shud be the minimum benchmark standard. Beyond the sensa is rather overkill.

Yuragi is something like a LRT feeder bus speed. Sometimes fast. sometimes slow. To give the sea breeze feels, rather than a constant speed all the time like a blender, this makes it nicer feeling.

Because Vtouch still using AC motor. You can calculate but I think its within 7-10 years ROI at least if you compare the electric savings. For small wattage item the wastage is like how a badly abused kancil running with dirty air filter also will take quite a while to catch up to a well maintained camry or accord consumption..not that significant. But the motor is properly sized (powerful enough) that if u put tissue paper on the table it will confirm fly off. Windless wonder fans about 300 bucks range has very small "efficient" 5* motor but like the name says its windless, that tissue paper will remain there and won't even fly off.

Mounting for fan hook all included in the box. The fan hook is supposed to be there on your ceiling 
The exception: for baby fan those not using fan hook one but 4 screw/sleeve anchor mounting points needed on the ceiling. But you're not looking at those so no need to worry.

Tools to install (PH2 plus screwdriver, test pen, pliers, spanners I forgot is either 12/13 or 13/14 because KDK one set pana one set one. Better u just buy one of each 12 13 14mm china one 2 bucks each je).
Since already buying the 12 13 14, can add in a 10mm spanner (not needed for fan) but its common size if you change car battery this is useful.

9.5ft sounds about normal condo height for newer condos.

In my parents place also condo, I use:
New Sensa 4 (current model) in living room of old 1995 condo
Clearance stock (new unit without warranty) 2014 previous model of Sensa 4 5-speed in smallest room of old 1995 condo
2014 model Bayu 4 is good in bedroom. But the quality of new unit really WINDLESS wonder.

And for my own place (rumaweep) with 9.5 or 10 ft ceiling:
Vtouch Jr for living room and bedroom
2019 Windless wonder Bayoo 4 for smallest room

What I meant by mounting clearance is that from the fan hook you must have enough space for the fan to turn and not hit your curtains/wall.