As a fellow N53sv owner, I would say if it's the screen that's causing you trouble, and you can live with the slightly slower CPU, then go for the HP. The HP 17" units are only slightly wider than the N53, but give you more than 1.5" more screen to spread those pixels out across.
This has been one of my chief complaints about the unit -- for the size of the chassis, I would've loved to have a secondary internal HDD bay...