I discovered cryptic or "British" crosswords a few years ago. I've tried some of the collections published in England, but found the clues and references too specific to British culture and slang. I bought the first MENSA edition of cryptics several years ago, did the puzzles in pencil, have erased them and re-done them three times now. I'm pleased they've published a second edition. The cryptics published in the States (these from MENSA and one from the New Yorker magazine) are fun and challenging. If you are a crossword buff and consider yourself pretty good, I highly suggest trying these.