AMD Turion II ultra vs intel Core 2 Duo for laptop

I need some advise? I am looking at buying a new laptop soon, but I'm trying to decide between which one would suit me better?

I've been eyeing a new HP laptop, with dedicated video card, 3-4 gig ram, 320 gig or more hard drive, HDMI port, etc. with a budget of around $800.

I would be doing mostly viewing and some editing High res pics (18 meg pictures from a Canon 7D camera teathered to the laptop during portait photography) and some HD video viewing and maybe editing?

Would the laptop with the AMD Turion II Ultra (M600 2.4 ghz) chips?
Or the Intel Core 2 Duo (T6600 2.2 Ghz) chips be a better choice?

Thank you,
I was thinking the intel chip would probably be better, but it is about $150 more ($750 versus $900) for that model than the one with the AMD chip, of the 2 models I am looking at.
I wanted some opions from more knowlegable people than myself, as I try and make a decision which one to buy.