you don't need two identical drives for raid. You only need two drives. People need to stop spreading misinformation. However, if you combine non-similar drives in a raid you will be wasting some performance or space (or possibly both). A poor quality controller may prevent you from using mis-matched RAID drives.
But none of that matters since you would only have a single drive anyways.
As for the model drive. They are fast and they have a decent rating on newegg. The Crucial M4, Intel SSDs, and Samsung SSDs seem to have better reliability though.