Why is it they wont get advice here. I work with computers for a living and im also a MOD on 2 Computer forums.
Pre built are a waste of money PERIOD. Your not paying for the computer rather for sub par parts that are no name crap that are low to mid range capabilities. For the price you see on a desktop in the stores you can build it easily 300 cheaper or same price with top of the line parts.
I dont know how many Dell and HP desktops i have had to replace the power supplies,or hard drives as they use cheap components.
Cna NEVER go wrong with building your own computer if you know how. You save money and you get better warranty and customer service from each parts manufacture, rather speaking to dell or hp.