Best Air Conditioners for Upstairs

i am considering getting one for my upstairs.

i purchased this unit last night , and installation was very simple.the unit looks like a monster but light in wieght.it is so quite you find yourself checking to see if its still on, but the

although i have a swamp cooler that does great in the rest of the house, my upstairs bedroom was like an oven.the trouble was - casement windows.

we've only had the unit going for a few nights now but i think it has helped make our infant daughter sleep more soundly, as her upstairs bedroom is no longer sauna-like.we have slider windows and i

granted my upstairs is hot still (need to get anotherone).