Well, if it wasn't for Dragon Warrior/Quest being my first RPG ever when I was a kid, I probably wouldn't have gotten into Final Fantasy at all, so I can thank it for that.

I had a phase where I was absolutely obsessed with Final Fantasy, and that phase has long faded. I still play Dragon Quest games though, a lot more than I do Final Fantasy games.

Overall, I'd have to say it's a tie at the moment.