re: Sony
The only reason I can think of that people would buy Sony PCs is because they're pretty.
My parents just bought one not too long ago (over a cheaper eMac nonetheless, grrrrr) and while it had some decent hardware, the software really really really stinks.
It's featureless, horribly managed, ugly and not user friendly by a long shot, when my sister wanted to burn some of her songs on a CD with the supplied software, she couldn't because she couldn't figure it out and neither could I. There was no 'burn' button anywhere and the help files were no help at all! (she even said she missed iTunes, hee hee hee...)
I could go on and on about the photo and video editing/managing software but I think you get the drift that it's poorly designed.
The hardware specs are decent but hardly impressive and the case is not one that will accept upgrades very easily.
So coming from the daughter of a couple who just bought a brand new Sony I can say that they're not all they're cracked up to be.