Panasonic - Very slow to cool down the room. Malfunction twice.
Daikin - Noisy fan, noisy outdoor unit. Blue LED ultra bright. Whole room light up at night!!
Samsung - Rattling louver and other parts, and slow to catch up if room suddenly got many people go in.

Yes the triangle type. Even if I stop the swing, there is some rattling sound inside. When switch on the swing, rattling noise is louder.

Actually normal AC just the same to be cleaned. Flip open the cover, and slide out the filter. In fact, if you decided to do a quick clean, normal AC are easier, cause once you flip open the cover, the filter will be front facing, just use the vacuum cleaner to suck out the dust. On the samsung, since it is top facing, my vacuum cleaner can't reach and not enough bend to reach it.