Now that I am blessed with a set of the Addi Clicks, (BTW, love, Love, LOVE them!) I have become irrevocably intrigued by all other interchangeable sets, with few exceptions.
While I don't knit with wood or bamboo needles on a regular basis (note Addi reference above), I am itching to try the Webs bamboo set, the KnitPicks set, and am eagerly awaiting the announcement from Crystal Palace that they will soon be introducing a set of their own. In my book, they are the perfect bamboo needle: smooth, strong, smooth, and not too sticky. Did I mention that they're smooth? Add multiple cable lengths, connectors & a nice case and I'm sold. Forget the cost--mac & cheese for a week or two to pay for 'em, I'm IN. Like Flynn I'm so in.
I have also seen ads for the Hiya Hiya set, which comes in such lovely small sizes. As a loose knitter who starts all guage swatches at 2 sizes smaller than the pattern recommends, I find this particularly interesting.
Have I mentioned convenience? Imagine, between two sets (one wood/bamboo, one metal), all your knitting needs are covered. Perfect for one of those knitting cruises where whenever you go ashore they send you right into the mouth of temptation and a rampant case of startitis. The Girl Scout in you would be praising your level of complete preparedness.
I admit it. I am greedy. I covet things. Especially these things. Need doesn't even enter the picture. I want them all and I'm not afraid to admit it.