How should choose the computer?

I want to buy a price in 4000 Yuan about table model machine or the notebook, should better be able to use by stages, what brand or are the model performance-to-price ratio highest?
Has! Assembles the computer with the Shi Germany.Shi Germany’s service, reasonable price! If is about 4000, the table model machine performance should compared to same price notebook, as for the brand and the model, may arrive on-line has a look much, I buy computer’s time, also looked has been very long, has certainly understood, only then bought, otherwise flickers very easily by the human.