I bought two Western Digital 320GB RE3 drives about a month ago to do a software RAID 0 to capture 720p uncompressed. Well, apparently they aren't fast enough to reliably handle the necessary data rate all the time. I probably should've gone with the Black line, but I figured "hey, Enterprise grade is more reliable!" At least they were only $50 each or so. So now I'm wondering if I should just buy two Blacks to replace these, if I should buy another RE3 or just add another Black to the mix. My question basically boils down to, can you mix and match drives (brands and size) using the OS X software RAID? And then secondary to that, what do you guys think I should do of the three options below? (add another RE3, replace with two Blacks, keep the two RE3's and add a Black) Thanks.