Troll and Goblins
You can never have enough low level monsters running around and causing trouble. The goblins have decent detail, and nice poses. They are easy to cast, and thanks to their small size take less metal than other figures meaning you can cast more of them with the same amount of metal. The troll is a bit generic looking, and only man sized. It makes a good brute figure, and adds a bit more punch to an encounter with a group of goblins.