Like others have said, pretty much the same thing here. Vader is definitely the runaway winner so far, as he is always in generous supply everywhere it seems. I can totally understand always having a Vader out there, but I think we might be at the point where they can just pack him 1 per case. Like it was mentioned, most kids already have their Vader (or are just into CW and don't care), and I know we collectors definitely have our fill of them. 4-LOM is also a pretty big pegwarmer.
Fett is definitely the toughest to find here too. I've only seen one at retail, and that's probably because I work part time stocking at our local Target. Otherwise, I think they'd all be gone before I'd get there to shop. I do think Leia seems to be selling very well, maybe the best selling Leia figure aside from the Slave Leia version. Luke and Dak seem to sell well too. Otherwise, the rest of the wave seems to do ok. I can't say any, aside from Fett, are tough to find - but none aside from Vader/4-LOM are necessarily pegwarmers either. I'm curious to see what will happen with the ROTS wave. A nice wave, to be sure, but a lot of overlap on figures we've seen lots and lots of since 2005 (Anakin, Obi-Wan, Grievous, etc.)