Samsung Triangle is noisy and not durable.
Sharp JTech is a bit expensive.
Panasonic ECONAVI can save 65% electricity with ECONAVI switched on.
We are using Panasonic CS-S10RKH. New model in market now is CS-S10SKH.
Mitsubishi Electric spare parts and A/C are the most of all expensive air conditioner products.
What cleaning features is it that you mentioned? You mean Nanoe-G?
Nanoe-G is the function that Panasonic have is to purify the air kills 99.9 bacteria and germs.
Sharp have plasmacluster that also purify the air and kill 99.9% of bacteria and germs. (Selected models only). One customer got cheat by them that the paper shown got plasmacluster but when found out after installed. No plasmacluster is there.
For Samsung, I don't suggest you use it. Some people will complaint that Samsung A/C is noisy.
Samsung type is Virus Doctor, only higher end model have. (Selected models only)
Last time got one dealer told me Sharp air-conditioners are OEM by a China make. Sharp does not have expertise in air-conditioners. Not sure true or not. He also said MH is noisier than ME but I find it the other way round.