The good thing about Denise and Boye sets is that they come with their own cases. Knit Picks sends its needles out in really lousy plastic zipper bags. I spent weeks in quest of a better case and found this carry-all on sale at Joann Fabrics. It's not perfect, but it keeps the needles sorted and allows me to store all of my Knit Picks needles by size.
Besides all these interchangeable needles, I've got a ton of other circular, DPNs, and straight needles. I've never found a good storage solution for these until now. I bought a Shimano fishing lure binder with extra pages from a hunting and fishing store online. It's perfect. There's a recloseable 3-ring bag for each size, and it all zips up into a nice little package.
This terrific binder still doesn't solve my problem about knowing which needle sizes I already own. I've tried Ravelry's knitting needle inventory feature. (If you haven't found this, it's under My Notebook.) I know this should work but it doesn't because the needles that show up on my inventory never seem to be in my binder. I need RFID for my needles - and yarn, too. (For the uninitiated - which you probably all are - RFID, or radio frequency identification, is used by large retailers to track inventory through the use of radio waves. Sure beats counting everything by hand.)
By the way, see the little square thing in this picture? I bought it from Kathy Zimmerman's shop. It's an Addi 4-inch gauge; you knit your swatch, lay this little device on top, and get a perfect gauge count. No more fooling around with rulers and trying to accurately count your rows and stitches. What a simple but revolutionary idea. The gadget also features a needle gauge but the holes are only in milimeters; I wish it also provided US needle sizes.
Finally, a quick update on the Augusta. I finished the second sleeve last night. What a quick knit! Tonight I'm starting on the back. I figured I'll knit it next and work out any bugs before starting on the fronts. I'm really digging this sweater. Can't wait to see how it all turns out.