Can't quite understand the mind set of people who by flagship cards, and even less the people who buy titans. Why pay 50% more for 10% more performance instead of just going for two of the second highest. I find it unlikely for example, that 2 290X performs 25% better than 2 290, yet it costs that much more. Anything that 2 290X can run, 2 290X will too... so why pay the extra? is the extra 100 firestrike points, or the extra 1 FPS in valley really worth it?
As for titans, why pay 2x the price for a bit more RAM? Blows my mind.
Regardless, you got them for a good price, hope you are happy with your purchase! they should be able to stomp 1440p gaming for quite a while.