I love wooden/bamboo needles and they do help keep sts from slipping off. I have gone from using the cheaper/less expensive kinds like you’re considering buying to Interchangeable Harmony for this main reason:
I had over 750 sts on one of the cheap kind that I bought on Ebay and the clear cord broke off just below the needle it was attached to…fortunately I am a member of the Frog/Lost Stitch Society and knew how to salvage the stitch loss I experienced. I was HOT HOT HOT!!! BUT, I couldn’t blame anyone but myself because as a throw knitter, the needles are constantly moving and working back and forth, the cord just twisted one too many times.
Second reason: The join of the cord to the needles is okay but not all of them are secure and WILL pull off. Try glueing something that tiny to something else that tiny.
Third reason: On the smaller sized needles, the cord is just about as thick as the needle. Not good when trying to ease the sts around to knit them.
Fourth reason: I spent around $20 total for one set of the 30" lengthed circulars. That included shipping but I then had to turn around and spend another $20 for shorter or longer lengths.
After my “lost stitches” incident, I decided to buy the needle tips in the sizes I use most…3(US) to 8(US) of the Harmony Interchangeables. Then I bought each size of the cords(there are two to the package in each size) and I purchased three sizes in the “Fixed” circulars, size 16" length. I don’t have to worry if the cord will break…very durable. The cord is much smaller than any of the needle sizes…smooth knitting and feeding. The cord is secured inside a jacket that I am tightening up.
Long story shortened… I wasted money on the cheap needles and could’ve just gone ahead and bought the Harmony needleset. I dearly love the interchangeable concept as it allows me to have WIPs on the extra cords and is so versatile. Knitpicks has replaced a defective needle set for me, no questions asked when I emailed them about a snagging problem!!!
OMG! I’ve written a book…sorry but I feel very strongly about having good knitting tools.