I loved Megaman X3 that was my all time fav besides Megaman X2, I wassnt the biggest fan of megaman 7 and i never played number 9 yet,

followed by megaman x5

I was always a big fan of Megaman X

Of the originals, Mega man 2 is by far my favorite. It was the first one I ever played. Of the X series, I'd say X1 followed by X4.

I'm only gonna cover the Main Timeline (Battle Network and Star Force are not here)

Classic Series: Megaman 2

X Series: Megaman X2

Zero Series: Megaman Zero

ZX Series: Megaman ZX

Legends Series: Megaman Legends 2

megaman 2

Battle network 5 and 6

Megaman 6 because it was my very first MM game ever ^^

prob 3 for NES because it was the first one i ever played

Of the classics, Megaman 3, followed by Megaman 9

But my favorite one is MegamanX