Re: which computer to buy?
i've (personally) not had *particularly* negative experiences with either. That being said, ive never owned or used a Dell that i thought had anything 'special' about it. But as is the way with most 'consumer' purchasable PCs, it's just about average until you gut it, get rid of all the trial crap and remove the pre-installed 'utilities'.
Alot of companies (including the one providing my apprenticeship) use Dells, probably because they are usually, for the lower business class models, quite cheap. Dell also provide reasonable customer support and have a reasonble company policy.
HP, dont see much business use these days it seems, but again i've never had a negative experience or head of many negative experiences with them.
at the end of the day, every company slips up sometimes. Take intel for an example with the sandies.
do some research and pull up whatever independant reviews you can.
EVGA SLI Micro Z68 // Intel i5-2500k // 8GB Corsair Vengeance 1866MHz // Overclocked 2GB MSI R9 270X // Corsair Carbide SPEC-03 // Kingston Hyper-X 120GB // 2TB WD Green + 500GB WD Black