I won't buy another Dell-produced product. Alienware used to be freaking AWESOME until Dell bought them a few years back.
Back in the mid-90s, Dell desktops were great. I had one that lasted me 8 years, with proper maintenance and OS upgrades. Then in 2003, I bought a Dell laptop and I hadn't even had it 3 months when the hard drive died. Then 6 months later, the screen went out. Another 6-7 months and the screen went out AGAIN. Then 3 months later, the motherboard fried. So I splurged and bought another laptop from Cyber Power PC (which I have nothing against, but I probably won't buy another system from them though mine was great) and I bought a new desktop from Dell. Less than 2 months after getting the desktop, the DVD/CD drive stopped working correctly. I could get either video or sound, but not both at the same time. Piece of crap.
I am going on 3 years with my HP laptop and I love it, other than the fact that my daughter whacked the trackpad with a toy one day and now it will randomly go white screen and then I have to hard reboot it. Otherwise it is great. I just need to defrag more often and buy a new cooling pad (the fan on one side of my current one is dead).
However, with the kids, I will soon need to buy a desktop system. I will splurge on that one for gaming, as I'm a WoW player. I have D3 but I can't stand the controls. Click to move irritates the crap out of me, and having to hold down Shift so my caster doesn't move while attacking? A freaking nightmare

Plus, I don't like that I can't change my camera angle. That's why I couldn't play Resident Evil console games because of the lack of changing the angle.