2Tb Internal HDD Advice.Seagate or WD or Toshiba ?

What is your budget? Don't get the WD Green, many people have said that it's a pretty terrible drive. You would want to look for WD Black Drives. I don't think I would go for Toshiba either.

Wouldnt go Toshiba, aren't really that big a competitor in the HDD space.

Betwen WD and Seagate, would say both are about equal. WD has a higher price tag and a longer warranty, Seagate is generally cheaper (especially on 2TB drives) but only a 1yr warranty.
IMO, go for the Seagate. A HDD will fail in the first few months or never in my experience, so the longer warranty is pointless.

Also remember that all come from the exact same factory most likely, quality wise theres no real difference.

Sadly my budget is upto WD green.Can't go for WD black..
Seems Either Seagate or Toshiba..

I'm using the WD 80gb,its been 7years now still running.. 

I wanna go for Seagate but the replacement period is 1month here in my place.Is it normal period for replacement?

If I were you, I would select the WD Green, for my WD 1TB hard drive still works well after one year.

http://www.amazon.co.uk/s/ref=nb_sb_noss?url=search-ali...

If the WD Black drives are too expensive, then I would go for the Seagate drives as others said.