Rm900 is cheap for Haiku. I was quoted RM1200 including installation.

I have gotten 4 fans for my new place, 3 of them KDK and so far none have wobbling problems.The only regret I had was with the K15Y6 (5 blade) which i used for my master room. The noise it generates during the lowest speed is louder than my panasonic aircon, which makes sleeping tad bit difficult.
The best investment I made for the fans is the Haiku fan which I used for my dining area, I should have gotten one for the master room too (cost saving measure, now a bit regret).

Ozak
The fan is good, minimal sound, with decent airflow. Best part of it, the blades are pre-balanced in the factory, and the technician just need to match the colour codes on the blades for assembly. That is why no wobbling after installation. However, it took them 3 weeks to arrange installation, thus if you want to have it during your reno, probably it may be best to plan early.
Price is the main killer.... it is more than double the price of the K15Y6.

As far as I know, KDK does not sell one to be used with hooks. I did had that problem earlier, thus I asked the reno guys to remove the hook, since it is just a small matter of unscrewing it from the plaster ceiling. However, if your hook is embedded into the concrete slab, you'll need to find someone to cut it.
The other option, is to get a shorter blade fan from KDK. Its called junior fan, and is only 48" in diameter, and needs a fan hook. However, they look 'old-fashioned' since they are regulator type of fan.