If you are talking about External Hardisks, SEAGATE, name is enough, It will give you the best Quality, and Quantity, means 1 TB. I have purchased it from ebay.in, I got it near baout 2.8k, and its not very Expensive, I have applied coupons of about 10% on this order, then after I have got it in this price.It has a best thing that it comes witha LED light(GENERALLY BLUE), which give it a best look, I Also got a one year free warranty with the hardisk I purchased, overall it is a good product, and I have used it almost 900 GB and no sign of oldness seen, there is a best Diamond design over the hardisk which matches also with my Sony Viao laptop, I will give this product a 5 Star. THANK U