Well, be more detailed on how you will use it, heres a checklist of typically high end uses:
*: 50bajilion browser tabs
*: high end media like blu-ray
*: Gaming, and to what extent, I.E. Toribash, Oblivion, X3, Crysis, just throw some games out there.
*: Photoshop / GIMP / any 3D software
Also bare in mind laptops can typically cost between $100 to $200 more than desktops of similar performance.
Just respond to those and people can recommend how much RAM you need, what kind of processor, how powerful of a GPU and extras.