I know it's an ambiguous matter to mention Herodotus and history together for some, but I'd like to know which book according to your opinion is the best on Herodotus.

My primary criterion is that the book (also) has to delve into the person Herodotus instead of merely translating his works and sharing them with some handy footnotes and appendix.

I would suggest you take a look at the Herodotus website and decide for yourself where you would like to start with the dozens of books available. Herodotus Bibliography (http://www.herodotuswebsite.co.uk/Bibliography/newbib.htm)

A slightly less useful tip would be to take a holiday in Oxford, England (I get to visit at least twice a year!) and visit the incredible Blackwell bookstore. You can find most of the books mentioned in the link on the shelves. It's a lot easier to select the right book when you don't have to rely on an online review...

I would suggest you take a look at the Herodotus website and decide for yourself where you would like to start with the dozens of books available. Herodotus Bibliography (http://www.herodotuswebsite.co.uk/Bibliography/newbib.htm)

A slightly less useful tip would be to take a holiday in Oxford, England (I get to visit at least twice a year!) and visit the incredible Blackwell bookstore. You can find most of the books mentioned in the link on the shelves. It's a lot easier to select the right book when you don't have to rely on an online review...
Wall of Books crits Zuffox for massive damage - Zuffox dies
I'll se what I can make of it, even though it will be a chaotic selection process.

Thanks for the info, though. ;)