If u need to run your AC for absolute longer time period, inverter ACs are the ideal choice for you .And it seems like your relying on prices shown on official websites. LG/Diakin doesnt cose 65000 unless youre buying 2 ton model and then there are huge differences of features and product quality. Voltas has got no match when compared with LG/Diakin.
And if you ask me, if I can afford, I would choose to have hot and cold AC rather than a regular blower as it destroys oxygen level and r not benificial for your body.