Whats the difference between these 2 HDD's?!?

I am currently putting together a new system and came across the following two Seagate HDD's...

http://www.newegg.com/Product/Product.aspx?Item=N82E16822148309

http://www.newegg.com/Product/Product.aspx?Item=N82E16822148288

They are the same exact price and the only spec. that I see that is different is one HDD is 250GB vs 500GB. Therefore, why would anyone take the 250GB? Is there something else that I am missing?

Get the 500gb...

Not to be rude, but that doesn't answer my question

Ther are both the same HDD just one is 250 and the other is 500...

Actually, the 250gb is ES.2 and the 500gb is 7200.11, which is an older generation hard drive. The basic technology is the same, one is just a little newer.

This references the 1TB version, but might help to give you an idea of the differences.

While the Barracuda 7200.11 and ES.2 are almost identical drives, there are some important differences to highlight between them. For instance, the 7200.11 has a mean time between failure (MTBF) rating of 750,000 hours while the ES.2 boasts a superior and more server-oriented MTBF of 1.2 million hours. Essentially, this means the ES.2 should be a more reliable drive that is less likely to fail. Additionally, the ES.2 is designed with a much higher rotational vibration tolerance than the 7200.11, which is necessary for the ES.2 to maintain optimal performance when it is next to a bunch of other drives in large storage arrays in server racks.

http://hothardware.com/Articles/Seagate-Barracuda-ES2-1TB-Hard-Drive/

ES.2 and 7200.11 drives are one in the same performance wise.... the counter parts use the same platter densities.

but really in a desktop enviroment.... the normal 7200.11 is perfect, no point in spending more money on the es.2

great, thanks for the info