I also love Crane's, but make sure you get the kid-finish stock. It's what they use for their personalized stationery, and exceptionally smooth. (Made in USA) If, as recommended above, you go to Papyrus or any other store that has their sample books, you'll find a much larger selection than they offer online. Thay have a handful of actual Crane's stores which have the largest collection of their products that I have found.
http://www.crane.com/navDepartment.aspx?Na...Name=StationeryDempsey and Carroll is also very nice. (Made in USA) Their motif engraving is really superb, and their stock is thick and smooth. I've bought most of mine on their sales page:
http://www.dempseyandcarroll.com/category.aspx?categoryID=65Pineider is heavenly. (Made in Italy) If you like deckled edges their water-cut process produces a very nice edge. Very smooth paper, and their Capri line has nice hand bordered sheets with matching envelope linings. Their envelope linings are only available in tissue, which you'll usually pay a premium for elsewhere. You can find it here:
http://www.pineider.com/Smythson cards are nice, but crazy expensive. (Made in England) They're more toothy then the three above. Their engraving is soft bruised (American is usually hard.) Occasionally they have sales, but I haven't found a good inexpensive source. Nor have I tried their letter sheets.
http://www.smythson.com/SmythsonSite/pages/home/default.aspG. Lalo is a bargain compared to those above, but the Verge De France is the only stuff I've tried so far, and those cards are toothy. (Made in France)No feathering, which is nice, but I prefer "ice skating" on my paper. You can find those at Pendemonium, Swisher, and probably several other places.
I'd love to buy engraved stationery, but the closest I've ever come is Crane's Thermographed. One of these days, I'll treat myself, but so far I haven't been able to get over the sticker shock. Right now I'm trying several different brands of non-personalized to see which I prefer.
Best of luck finding your own favorite,
Kate