I think its more the OP doesn't have time to build his own. It takes 1 or 2 hours to build a computer and install all the software, or take 15 min to set up the computer he bought. To respond to the question asked. I hate both companies, however Lenovo computers are not the best quality. Many posters here are correct building your own product is "better" but not time saving! You will receive lifetime warranties with some things like ram and other things like Motherboards you will receive 2 or 3 year warranties. It will take you 2 days to a week to receive your parts, or you can drive to best buy and be up in running in 15 min to an hour, have a warranty, maybe pay more maybe not depending on what you buy. If you live near a Fry's electronics store, tiger direct store, ECT you could pick all your parts up in one day, but you still have to assemble them, and install your software. If time is money then you probably would save cash by buying a system already built.