I picked up Wave 3 at Target today.
I have to say that my least favorite set is Luke/Mara. Mara is a horrible figure.
Her neck paint does not go all the way up, so with her hood off, you see the ugly black ball around the base of her head because her neck is so long to accomodate the hood thingy. Plus, her head is really wobbly and has trouble staying on (at least on my figure). Also, her holster is HUGE, it looks like a purse or something. She does have nice articulation though (ball shoulders and knees, swivel elbows and wrists). If you get her in the right pose, she's passable. Not nearly as good as I was hoping though.
Leia/Vader is fine... nothing great, but nothing that bad either.
My favorite of the 3 is definitely the Hett/Dark Woman set. Less articulation on Dark Woman than Mara, but the pose/sculpt/neck is so much better. And Hett rocks - ball shoulders and knees, swivel elbows and wrists. Plus the twin sabers, one of which converts to gaffi stick are very cool, not to mention the mask/helmet. Fantastic set for $10.