As Michael has alluded, for me larger pieces are easier to paint because of problems with my eyesight. I bought these because I like them, and I thought they would be a good painting exercise as I am just now getting back to the hobby in a serious way. They also hold a certain charm/whimsy that I enjoy.
I acknowledge that a couple suffer from proportional issues (Atilla's oversized head and tiny feet, as examples from one of the figures), but the Roman and Kara Mustafa are well done; Maximilian is also well done but poorly cast and so unpaintable.
These will allow me to practice the various disciplines (flesh, metals, horses) while at the same time providing a bit leeway in regards to historical accuracy and research that will keep the pieces in the sphere of realism while still allowing for the artistic freedom that flats encourage over their full-round counterparts.
Rob