nex-7 or nex-6 which is ultimately better?

wakkaday wrote:

i have a nex-7 at the moment which cost me £680 with the kit lens

im thinking of changing it for the nex-6 which will cost me around £600. is it worth the change?

i know the 24mpx sensor sounds good, but in practical use, its no more different then a 16mpx? what do you guys think? i don't mind if the nex-7 has a better metal body... but ultimately if you had to pick one, which one would you buy?