Thanks, If i spent 5K extra I getting 2nd Gen + USB3+Better Bluetooth V4I have used 1st and 2nd.
Well, 2nd has much better battery life and performance compared to first.
I previously used Core i5 460M and now I use i5-2430M
The newer one is a tad faster, but battery life almost doubled! I get 4-5hrs at times.!
I think the newer Ivys have much betetr battery life, so I recommend you to go for 2nd gen at the least!