Aiks... Just got Panasonic airconds installed for the whole house about a month back.
Using a mix of the normal and EcoNavi models.... fingers crossed that everything works well.

Used Daikin aircond before at my parents place and that was one aircond that was forever giving me problems. From water leaks to air being not cold enough... it was a constant every couple of months nightmare. Had it changed to an older model Pana and used it a couple of years before i moved out of my parents place with no issues.

Aircond still going strong and cold even though i've not slept in that room in over a year. Maybe its a mix of the aircond manufacturers, the sellers and a lil bit of luck that determines a persons experience with a specific brand.