First thing to get out of the way, is that the terms "laptop" and "future proof" are mutually exclusive. The market is moving too fast. I bought a "top of the line", four months ago, and, already, it feels a bit dated.

Laptops with high performance "Ivybridge" processors, are coming on the market. Windows 8 will soon be with us.

The Samsung is a safe enough choice. I would say that, whilst it does have a "graphics card", it's fairly entry level. It will play some games, reasonably, but its capabilities are limited. I would also say that, for the price, I would expect a bit better webcam.

The HP, probably, is better value for money. Whilst I wouldn't claim any great knowledge of AMD, the A8 is reasonably good, and graphics look promising. It's still got a rubbish webcam, but you wouldn't expect much better, at the price. My slight concern would be over reliability/ after sales service, although I may be being harsh. You should check out some user reviews.

Before you decide, I would suggest checking out Asus and Acer. I would have thought they could provide some interesting options (even Toshiba, again. Their game capable options are quite good, if a little pricey).