I would build it around HighPoint Raid controller cards.
That is "hard RAID" that Burkingam was referring to. Those cards cost from 30 to 1000 bucks, so I will choose one I need for my needs when the time comes.
Thing is, unless evga has a motherboard that I like and it has 2 PCI-E 2.0 slots, I will either have one software raid and one hardware, or only have raid 5 for the storage.