Black Scorpion are definitely the biggest though. Check out this post on my blog, there are a number of photos with different manufacturer's minis next to each other. There are two or three with a Reaper mini right next to a Black Scorpion Mini. Although Black Scorpion are the largest I think they will still be a little small for 1/48, you might look at 40mm and see how that stands up to 1/48.