Which generation's logo?

[Tacodidra 61,081]

The G4 logo is my favorite, especially the later variant (the one in @Rosy Moonlight's post). The earlier version has a little too much pink for me but is otherwise nice.

The G2 logo is my second favorite – the inclusion of the pony is nice, and the text part is an improved version of the G1 logo. G1 is third best, rather simple but it still works well. The G3 logo doesn't really appeal to me for some reason (although I can see how its later and better variant inspired the G4 logo), and neither does the G5 one (it looks messy to me with the all caps and the placement of the words).