I have a Pana Bayu 4 windless wonder POS fan. It is essentially the biggest regret of my life. I have installed and uninstalled it in 3 rooms from living to MBR to finally stuffing in smallest room. Windless as in even at max speed u put tissue on the table the tissue stay there, will never blow off. Want to donate away to people also I heartache to transfer uselessness to other people.

For ceiling fan
On a budget: The regulator 60" is cheap and produces most wind (8122 cfm or 230m³/min) it just doesnt look pretty.

Remote fan 56" <300 bucks usually metal blade. KDK OK. Pana latest range are POS, 2018 model windless, 2014 one strong wind.

Remote fan 56" 400 bucks Vtouch Jr/515 bucks Sensa 4 ABS blade, there is some better tech in the blade angle and they are excellent cfm too (225m³/min). These all use the same blade, tried and true design.

To reiterate NEVER ever buy a Pana POS remote fan (Bayu 4). Many forumer also regret in ceiling fan threads. Get a KDK.

KDK and Pana made in same factory, but Pana factory can modify Pana design and cost cutting suka hati as they are the principal.
KDK model made under license, local Pana assembler cannot modify spec, design, or cost cut without principal approval.
That is the fundamental difference.