Hmm let's be honest though, the opinion of a guy that can not only afford to buy 4 of every graphics card ever built but actually does so, does not reflect the most logical or sound opinion
You can buy
two 290X 8GB's for the price of
one Titan and still have money leftover for a night out on the town
So from a more logical perspective the 290X 8GB's make more sense in terms of value VS performance and the extra vram you're getting. 8GB VS 6GB. Titan / Titan Black and 290X are within punching distance of each other..
So whatever you're talking about 'bit more going on' in the Titan's must be doing so in stealth mode, because it certainly isn't reflected in performance or value VS the competition.
290X 8GB any day of the week !!