One which I got not very long ago was compiled by Michael Mephram. Maybe it is just me, but the labeled difficulties for the puzzles in this book bear little to no resemblance to their actual difficulties. It's annoying enough when the labels use silly words ("gentle," "moderate," "tough," and "diabolical") vs. the more normal "easy" to "very hard" labels. But the only thing harder about the "diabolical" ones is reading the font on them.
I suspect I will be taking crosswords to Kiribati instead.
