I suppose that it comes down to your long term goal and what your blog is about @MJS7. Mary Smith can be branded as anything from Martha Stewart to Gordon Ramsey. The other domain reads somehow food related to me?
The notion of branding your name is great if you're going to keep your business. The awful part of branding your name is ending up in a Famous Amos or Kate Spade kind of situation. If your long term plan is an exit don't start with your name.
...turns out that my two cents is worth less or more depending on the current exchange rate.
roy darling *my posts seem a lot shorter in my head