Good, but expensive. Do you need to fit a full-size video card? If not, the Lian Li Q07 might be a better choice as far as value. Personally, my next build will probably have the Lian Li PC-Q11 late this year/early next year. Not out yet, but it should be available any day now.
If you haven't bought a PSU yet, check out the Silverstone SG07.
The best contending Mini-ITX cases as I see them right now is:
Lian Li Q07, Q08, Q11 (no PSU included on any of these)
Silverstone SG05/06 (comes with 300W PSU), SG07 (comes with 600W PSU)