If you do OC then the second one is better, the mem will be better and so wil the motherboard! At stock speeds the first will be better because of the processor difference, so base you decision on OC'ing or not!
I've never OCed before, so how complicated/unsafe is that? I probably won't have many, if any extra fans at all. Also, are you sure that the second mobo can even OC? I coulda sworn i read on some newegg review that it couldn't.
on a tight budget i would personally wait for the E4300 as it will be alot cheaper and still same cache and speed as the current E6300 also motherboard prices will have dropped and you could probably catch a 965 motherboard on the cheap