I don't have input on which is better because it's really a personality thing. The blogs that I know are personal are extremely, intimately personal. Like Dooce and Bloggess and Penelope Trunk. They get tons and tons of traffic and monetize that in at least 5 ways that I can see and probably others I can't.

If you have that type of personality it can work for you. If you don't, well you might find more it nerve wracking and quit.

I'd definitely study what they have done, take into account what they are doing now and ask yourself,

Which has more appeal to you? Which will be the most fun for you? Which do you feel you can commit to doing for the next while?