Greetings, I've been a lurker on this site for awhile now - and I'm strongly considering upgrading my stock 250GB HDD to something much larger (preferably in the 500GB - 1TB range). I do know that I want to stick with a 5400rpm HDD (unless someone here can come up with a compelling reason otherwise). Does anyone have a recommended brand for a 1TB or 500GB hard drive to put in this thing? I've decided that If I do it -- since I'll have the thing opened up, I'll max out the RAM as well. I am wanting a HDD that is still as quiet as the stock one, that won't reduce battery life, and is reliable.