Well, those have their merits, but for my money, the Miriam brothers, (Noah) Webster and (Peter) Roget are "the greats", although technically Roget is British. I would certainly be inept without them. I have had these two books--the dictionary and the thesaurus--since high school. Yes, they are yellowed and showing signs of extreme wear (notice the missing covers) but I love them. I keep them handy, on the bookshelf behind my seat and I use them both several times a day.
I use spell-check but I love the feel of flipping thru an actual dictionary and searching for the proper spelling of a word. Sometimes it's a hunt. Sometimes I confirm my own suspicions. I especially love going to a library where there's a huge, unabridged dictionary. I used to get a kick out of telling Julian "the library has a dictionary that weighs more than you do", although that's no longer true so I had to stop. Apparently, the dictionary is growing at a slower pace than one son. :)
would like to do a dictionary scrapbook someday, with specialized definitions as the journaling.
So, now you know.