Laptop Advice.

It has been so long since i had last bought a laptop. Lets see. My first one was plastic, and after 2 years, i opened it and it cracked. No biggy. So then i bought my next laptop: A beautiful alienware. And it started on fire during use. But i digress.

So, when i'm buying a new laptop now, of course i go power hungry. I'm looking for something that can handle games that i want to play, but out of all honesty, i have a i7 quad core PC at home that i use most of the time, so i was really just starting to think hey. How much power does my laptop REALLY need.

Basically, i just need advice because i'm horrible at making up my mind. One laptop i really want has a m260 (geforce) video card, and the other one has a 4650 ATI (1 gig ram version), higher mhz ram, a better monitor, and better battery life. I'm wondering a couple things, if someone could help me:

What is the REAL difference between a 4650 and a m260. In 2 years, would i end up playing a game that the 4650 just CANT handle? Will i notice a real difference now, even?

Help me!

 

The 260m is much better than the 4650 (which is itself a decent, but not amazing, card), and is a worthwhile investment if you plan on playing newer games at high settings.