Buying a new PC.Should go for VAIO or DELL XPS?

[Solid_Snake4RD]

Hey guys I'm going to purchase a new Desktop.I want to a very powerful computer that can last atleast 3-4 years.Help me find me the specs.

 

I will most likely be buying an a Dell XPS or Sony VAIO,help me decide the better brand and quality

 

One more thing,I am thinking of going for the All In One PC's,should i or not?

 

I am gonna use it for High-Def,Gaming,Blu-ray,Photoshop,some technicle work,etc.Lets just say it should be top notch.

 

I was also thinking of getting the new Core i7

 

The budget is about $2000