You can try looking online to see if people have posted reviews or experiences with both the Sony and the Dell notebooks. You can also get a copy of Consumer Reports magazine and see if they compared notebook computers.
dell
Sony vaio notebook is not better than they ipad because there are less apps on it. Ipad is made by Mac and they are known to be reliable and have no viruses.
Sony will normally be better build quality, but they are WAY more expensive. Dell would be good for anything though. If you take care of it, it will last
Their are many laptops out on the market. Some of the most popular brands are Dell, Samsun and Sony. Sony laptops are not usually better than their competitors but also have great features suitable for your needs.
Micro soft is miles better than sony
yes dell computers are better than phillip computers!
no way No Way! Dell is wayy faster than Lenovo
i personally would rather take a sony than a samsung most sony's have better better screens
yes
Sony has the same specs are Apple at a lower price. Apple just has a different OS. In my opinion, Windows is better than Apple's OS, so I prefer Sony. If you can't live without OSX, you can get a Mac. Otherwise, go for Sony.
The Sony Vaio F series seem to be the best but you do not specify what f series you are looking for. However, after researching the Sony Vaio F series, they all seem to be the best performanced laptop than dell xps 3D.
It depends what you configure them to be on the Dell website. I5 is better than I3, DDR3 ram is better than DDR2, SSD HD's are better than disk drives etc.