Amazing , 5521 Better than 7520 Although 7520 ٍHas Aluminum Material ???
5521 is a newer model. i dont remember exactly but both were aluminum i think. if i remember correctly 5521 was brushed aluminum. check for yourself in the shops i guess they are common models always on display
checked online. brushed aluminum indeed and a thinner design with better battery life. more details on the dell website.there is no shops near my city am going to purchase it by visa so i asked you which one is beter
and you prefer 5521
thanx for your review