[cientifico]

Personally I don't buy to this suppliers. They do laptops and hardware in general by the trial an error method. They release often new and new models. So many, that probably they don't even know how many models they have. That means that instead of having good hardware, they have a lot of crappy options.

Actually is more about marketing. They want to have a lot of models, so they can have more laptops to fit better to the custom specs of each client.

This happens not only in dell, also in asus, hp... If you want to buy in any of this companies, ensure you buy the most common laptop.