I bought Hitachi Quadricool TM in the year of 2010, I have used acs like commander, Napoleon so I was not at all interested in buying SAMSUNG, LG or VOLTAS for that matter. Some of my friends and Air conditioner professionals suggested me General & Hitachi.
I opted for Hitachi albeit it is more expensive than General, it has not given me any trouble so far, cooling is marvelous, looks are awesome and it is the most silent window ac any body looking to buy an ac go for Hitachi.