I don't recommend Quantum drives. Yes, they have good performance, but only when they work.
I bought a quantum fireball+ka and it failed in 3 months. They sent me a replacement, and that one failed in 5 months. Tried to rma that one, they told me that they have no more fireball+ka drives, and offered me a check for about $80. I said that I'd rather wait until they have more, they said okay.
This was over 3 months ago. Called them yesterday, still no drives. And now they are offering $56.
Quantum sucks, I don't know what to do.