I have only ever played the PSP remake of the first Mega Man though I came into the franchise with Mega Man 2. I loved that game but it would be years later before I got to play any others in the series, I think my next was Mega Man IV on the NES and then only cursory playing to test carts but not sitting down to enjoy them.
It is wild to think that there was a period of time when Capcom was not all in on Mega Man, well, other than the current generation. The whole idea of Mega Man was unique, and not copied by many other companies that I know of for some reason.
RE: Robots, Platforms, and Plenty of Action: A Look Back at Mega Man