I'm a Spanish GM who enjoy many different game styles. I really like tactic adventures, but I'm in love too with narrative stories. I think the game style is not so important when the human factor (GM and players) is great.
Last years I have been playing GURPS because you just need to learn a set of rules, but you can play any style of game (fantasy, sci-fi, horror, etc.). But I'm open to learn about other systems. Nowdays I'm really impressed by 13th Age, FATE and Numenera.