^sis is the light always on? or parang automatic and it self adjusts? can you turn of the light din! tia! 
from the video's i've seen they demo'd na it doesn't really turn off unlike the nook na you press the llightbulb icon and it will. as moonstar did say, it dims the lights lang but technically it's still on. reason ni amazon is that the light doesn't really affect the batt life of it so there's no need to switch it off totally.
i've seen both. i must say papewhite looks really nice. even the shape of the gadget itself looks more appealing than the nook, and the screen is crisper.
cons i would think is the price difference, paperwhite without ads costs more and plus the charger fee, whereas the nook glow has everything inclusive without ads. ah one con rin with the glow i've read about was the quality may rare cases that a simple drop can crack the edge and the light will be glowing out of it, it may be annoying to have to replace it pag nangyari, i think they replace the item naman as long as you buy it from barnes. if you buy it from best buy or target you go through that store's warranty policy and not of bn.
i'm still torn between the two but if you've been a kindle user from the get-go masaya si paperwhite i'm sure you'll be happy with it. feel ko lang mas maayos yung buttons ni nook glow and how you can turn pages, there's more freedom there. pero when you read on the paperwhite it really is nice pantay yung ilaw nya and comfy to hold in a way, it helps i think that the lights sit at the bottom vs nook sa taas yun lights. basta its nice:)