Modelling World War II at 28mm brings a whole other level of detail with figures displaying a ton of individuality in equipment and poses seldom achieved at smaller scales.
I bought into the 28mm scale with a bunch of models from Artizan Designs, Black Tree Design and Warlord Games. All my models have been metal, averaging about $2 USD per figure. Each of the manufacturers produce models with sharp, detailed castings with minimal flash clean up prior to painting. The models from Artizan and Warlord tend to work best together with slightly chunkier figures and lots of equipment details. The Black Tree miniatures are a little more on the thin and delicate side and feature a bit less equipment. Together, the mix of models from the three makers present a nice diversity in poses and personality, and they all scale well on the table.