the best PC mark is ??  

For desktops, you should build your own computer. For laptops, depending on your finances. If you want to complete facilities and cheap price, I recommend buying Acer.

Hi, my laptop is Acer, i have used it for three years, it still works well.
My desktop all is made by myself.:)

Enjoy mylot!

between these 3 brands i think i would prefer dell than others 2!!so in reality medion i never heard and so tried it so i can't judge thei products may be they are good!!In reality in acer i don't trust so much and so even the configuration of their laptop or desktop sometimes did not convincted me as well!!So dell is a good brand for laptop ,desktop i think that prices and configurations are differnt but normally they are good and so even the possibility to configure the laptop for you needs before buying it is a good and worhy choice!!may be the limitation on this brand is that you can't see o touch your laptop before your buy considering they will ssell these just on the net...

For me, the best ones are Toshiba and Sony.

HP, Dell, Acer.

As a laptop - IBM for sure. Being built for business needs these things will not break down under high pressure. + They look damn classy. Even though the Thinkpads have now been taken over by Lenovo, Im pretty sure they will continue to be highly reliable. And for a desktop computer - I suppose it is best to put it together yourself.