I like the Chiagoo interchangeable needles. Since I received my complete set of 5" steel, I'm looking forward to getting the mini's set (sock sizes) in 5" as well. I would love to get the bamboo (spin) complete set as well for those very slippery yarns. I love the fixed circular needles Chiagoo produces too. I started with those, then found I liked them so much got an interchangeable set.
You could say I love Chiagoo, which I use almost exclusively now.