The 330 is using all 8 channels on the 60/120s.

I suppose it's possible be that the 180GB is only using 6 channels with 4 way interleaving, but the 180GB 330 is also different in that it's using "redundancy" (ie Intel RAISE), not found on the other models.

All in all, the 330 is pretty excellent IMHO, I'm curious to see if the 120GB happens to last forever too.