I also would prefer some kind of RAID/mirror solution. I lust after the Drobo, especially since my company does the CPU for that. Sadly, I can't work any kind of deal (I've tried). I've trolled ebay and CL many times w/ no luck.

The HP Media Vault and MediaSmart ones are nice as well, cheaper than Drobo. Don't even consider the Netgear NAS enclosure, that one is HORRIBLE, regardless of how cheap one can find it.