Some of you don't seem to understand the laptop market.
15" and the new 16" formats with slightly better technology generally sell for LESS than 13" notebooks. This is just the way things are. Smaller is usually more expensive, unless the product is seriously limited, like netbooks.
Also, $1,000 these days does not buy you great laptop graphics chips. Most $1000 and under PC laptops also come with mediocre graphics, but this is to improve battery life more than just lower production costs. Most consumers do not need anything more than an X3100.
As for the Sony Vaio line, most of the models do not even have DVI-out, which is mandatory for any serious notebook. Even the Air has a DVI-out adapter. In order to get DVI-out, you are forced to purchase Sony's $199 dock
I was considering a 12-14" Sony for awhile (to Hackintosh), but the lack of digital output is a deal breaker.
I had a new 16" Sony FW series and will tell you: while the CPU is outstanding (speed + incredibly low heat, idle 35C, medium load at 40C!), the standard screen is AWFUL, and the overall build quality is garbage compared to a MacBook Pro.