Coming late to this party, I feel like everything has been said... I love the sandies for their big guns, especially the MG-34, and all the dirt! I'm a potter, so dirt is just a must for me! Film wise, they just look badass, especially when they are walking down the street to the docking bay. They just look like they own the place and they know it.
My costume list would have to be:
TD
ESB Fett
ESB TK
ANH TK
CC Bacara
USCM <-- I know it isn't Star Wars, but why the **** not!?
Mal from Firefly
I've got a long list, and quite a ways to go, but I'm still young right?