I actually have one of these already, so this is the first "double" that I got in the Lot. That said, I like the figure a lot and wouldn't mind having 2 of them. If nothing else, when you put the "arms" back on it looks like a regular Dalek so you can display it in both states.
They're actually releasing a version of this as part of the Series 5 figures. The only difference, as far as I can tell, is that there is no mutant reveal feature. So really, this is the better figure.