I put together a new system a couple months ago and will mention these core components simply because they seem to play together 100% reliably...
$80, 2TB SATA6 drives, 4 of 'em...
http://www.newegg.com/Product/Product.aspx?Item=N82E16822145475X58 Mother board...
http://www.newegg.com/Product/Product.aspx?Item=N82E1681313164124GB RAM...
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231357And an I7 processor (the big socket version that suggports 24gb) and a dirtball video card WITHOUT an annoying whiney fan. And a 900 watt power supply. All choices that would not make a gamer's heart beat fast, I was going for reliability.
There are probably a bazillion other combos that would work as well or better. Reading the reviews on Newegg and other vendor sites can be pretty painful, but it's a good way to tell if you are buying compatible components, search the reviews of one item to find mentions of others you are interested in.
And it all cost me a whole lot less than an equivalent you-know-what, begins with an "M".
The Hitachi drives have seen solid so far, I figure if a drive survives a few weeks it'll stick around for a while. Not the fastest drives, but I don't feel like I'm waiting, either.
I am absolutely loving the effects of 24GB of RAM. I think money spent on RAM will have more impact on photo applications than fancy hard drives or SSD's. I can work on 2GB PS files with Lightroom open while using memory-hog third party plugins, and even write lengthy posts on LuLa and it's like ho-hum no big deal. Memory-hog plugins that used to drag my 8GB system to snail's pace are now quick a like a bunny.