I am looking at the same decision (ordering a new HP laptop). It will be an i5-450 and I am maxing it out to 8G memory. I'm not a gamer. It will primarily be used for internet, Word, Excel and Access, however, I know from experience to beef up capacity to handle future software releases. My graphics card choices are:
Intel HD Graphics
512MB ATI Mobility Radeon HD 5470 switchable graphics
1G ATI Mobility Radeon HD 5650 switchable graphics
I suspect Neil is looking at similar choices.