Well as it's got to be mini-ITX, with Core 2 support, DDR2, and a full PCIe x16 lane, there' s not a lot of choice. Pretty much just the Zotac 9300-ITX.
And I remember the fun and games with my old DFI LP nF3-250Gb. The latest drivers were utterly borked with that board, they'd cause it to crap itself so badly you had to wipe Windows and start again.
I understand it's better now (from reading around) but believe me, given the chance i'd not take the risk again.
I am very tempted to go up to Core i5 though, with the DFI MI P55 board (Intel chipset) and that way I won't have as much trouble with worrying about support.
The drive i'm considering is the Intel X25-M G2 160GB. It's a pricey little 'un though, but I don't feel 80GB would be anywhere near enough. I guess I could go for something in the middle like the Samsung controller drives - P22J, M225 et al - but then the Intels get such good reviews i'm thinking I may as well just absorb the extra cost.
I have a 300GB Velociraptor on RMA that will be sold to fund the drive; if I can get a good amount for it, then it should take the "sting" off the price somewhat.