The future proof arguement again, there is no such thing as future proof but rather upgradability, both AMD concurrent chips and Intel concurrent chips have a upgrade path, but it buying something small now to replace it then often results in a loss, to buy a $130 chip now and replace it with a $220 dollar chip in a years time will see you make a overall loss. Simple philosophy, buy for now. If you are dead set on intel then rather save the extra month and get a i5 or i7 to cater for you needs.
As for the D3 benchmark, it is a solitary game and the FX 8000 is maybe a 1% slower, but in practically everything else it will beat the i3 hands down and cost $20-30 more.
As for the Phenom II arguement, while I do agree, it goes back to the point, if you are going to buy a phenom II now to replace it in 5 months time with a Piledriver, you will lose a lot of money in upgrading. The FX is copious enough for any non-enthusiast that wants a little of everything.
And the finale, whether you get a SB/IB or FX/PII all these chips will still offer you tangible performance for a few years yet, if you are looking for longivity.