The Maul figure was not released in the United States, though I believe it had a run in Canada, so they might be easier to get than one might think.
The Boba Fett Titanium figure is a VERY nice sculpt in either painted or pewter. There is an amazing amount of detail in the character sculpts!
Keep an eye out for the C3PO figs. They come in Bronze finish, but are EXTREMELY hard to find for some reason.