Its the size that makes them a winner for me. While Cosmos is OK, the points that M Bot makes are pretty much right on. but i LOVE Brawn! he is exactly what I would want from his character; Size, Color, sculpt are all great. I admit the ball shoulder is a little loose, mine pops out a lot. But overall i REALLY like him, Im VERY happy with mine.
Also MBot is right: Reprolabels make all things awesome.
i do NOT Play with toys...
But I DO occasionally do scale model assisted simulations in physical fight dynamics.