I myself have only ever used custom ordered DELL laptops and Sony VAIO with ordered memory/vidcard/OS/DVDRW laptops when I had to use them , Max
I suggested my Daughter order her a Sony VAIO year before last , model# VPCF13UFX/B and upgraded the memory from 4 Gig to 8 Gig with win 7 Home Premium 64bit
The custom ordered dells, always seemed to give me what I needed when working........ but this last Sony VAIO , I had my Daughter get seems to do a great job...... ( only room for 1 HD though, least I think it has room for only one )
I prefer laptops that allow for memory upgrade, videocard upgrade, possible M-CPU upgrade, ability to add an extra internal HD or SSD, etc....
hope this helps, Sir
Cheers
TC ( Johnny )