With a Zelda I've only ever played the original NES one and liked the time I spent. With MegaMan it's always been the off shoots. MegaMan Soccer was constantly rented growing up and Battle Network was great.
But what's weird to me is that I've never enjoyed any of the 3d Zelda games, but still consider the MegaMan Legends series among the best games I've ever played. I'm still bitter I bought a 3ds specifically in anticipation of the third game and it was then cancelled.