Those SIGMA figures are great! I own Boba Fett, Vader and C-3P0/R2 as well. I really love these figurines as well.I finally got a good deal on the Sigma ceramic Jedi Luke figure, so I think I've completed my selection of figures that can fit into a Jabba's Palace display. I really like these.
I also recently got a Lili Ledy Jabba from a board member, which has been a long-term goal for me.