Which disk array with Kona2?

I am in a middle of buying new video editing system and have decided to go with Kona2, G5 2x2.5GHz and latest FCP (hope that 5 will be ready), but am still unsure about disk array. At this moment I have Medea RTS 5/480 / Atto UL4D combination but had lots of problems with it (especially at the start when there were no drivers from Atto at all).
Currentlly I am looking at some Medea solution (RT3X) and Huge (U320-R) but am not sure if any of those will give me enough throughput for 1080/24p or 1080/60i.
Any suggestions and/or experiences?
Thank you in advance.