With a RAID 0 setup like that if 1 drive fails you lose the data on both drives, 2tb is a lot of data to be risking like that.
I would just grab a couple 1TB drives and use them individually, or if you want windows to see them as 1 volume you can arrange them as JBOD (just a bunch of disks)...so that they will display as a single volume but they won't be in RAID.
I recommend the Seagate 7200.12 drives as they use 2 platter 1TB drives which means they will run quieter, cooler, and have better transfer speeds.
However pretty much all the newer 1tb drives are really good...All the WD drives are great, and I think the Hitachi 7k1000.b drives are excellent bang/buck...higher platter density than samsung f1.
However, if I were buying new I'd probably grab the Seagate 7200.12