Samsung make awesome LCD panels and TVs and pretty average phones except for their PDAs and high-end mobiles (they have a phone with a 10.2MP camera). I have no idea how good their laptops are though. I'd imagine that they're pretty decent. As far as electronics go, I trust Samsung more than most other brands.

In my opinion, Asus make the best motherboards and graphics cards in the world. I've never used Fujitsu.

For every good review of a brand you see you're going to see a bad one. Don't take them too seriously - I'd advise that you look carefully at each laptop and decide for yourself what fits your needs and price range best.

For something relatively low-end you'd be looking at:
160GB hard drive
1GB RAM
GeForce Go 6600 GT
15.4" LCD
AMD X2 4000+ CPU (I'd definitely go dual core)

Something like that is at the bottom end of today's market, but to give some perspective, it would run Oblivion on medium-low settings.