It depends on the show, but for the most part, I'm more into dubs than subs. I usually start watching a series with its dub and I tend to be content with most of the dubs I've watched. There are some series that I've seen subbed after watching their dubs, such as the various Yu-Gi-Oh! and Digimon series. There are also a couple of series where I'm perfectly fine with just seeing the subbed version, although the only examples I can think of at the moment for that are Hikaru No Go and Madoka, but it still generally depends on the show itself.