I found Wave 6 at the local WM this morning. It looked like there were several CGs on the pegs, so I'm hoping that people will have less difficulty finding them in this assortment.
Quickie reviews:
-Torpedo: One of the best figures of the line, thus far. Very nice sculpt, tons of accessories (although you'll want to keep a close eye on them, as some are very small), and they even included small pegholes in his flippers so he could wear them and stand on his display stand.
-Cobra Commander in Battle Armor: Great figure. The backpack is much larger than the vintage RAH one, but it's not bad or anything. The coolest thing is that his helmet is removable (!), even though it has a Firefly-esque "stocking head" underneath. Fans of the comic (issue 58!!!) will be interested to know that the helmet fits perfectly on the comic pack Crimson Guard "Fred" head, although the hole on Fred's head fits really loosely on the CC head post. Some small fiddling by skilled customizers could fix that, I'm sure.

-Rock N Roll sucks. I'm sorry, but this is easily the opposite of Torpedo's "best figure so far" statement earlier. The head sculpt is very weird (I described it to another friend as being similar to the AOTC/Saga-era Obi-Wan figures when it comes to hairstyle), and the bandoliers just don't work very well and look awkward. Due to his hair, the helmet doesn't fit his head properly, and his elbows aren't made so he can hold his gun properly. The bipod on the gun is seemingly way too large and sits crooked. Overall, this is just a bad figure, and I wish they would have delayed him until a later wave to get him right rather than just throw him out there like this.