It may not be the needles that are giving you fits.
I took a class last weekend to learn continental style knitting. I used straight needles, bamboo, that I've used many times before without problems.
This time, however, after just a 3 hour class, with probably not more than an hour of actual knitting, my hands were killing me!
Conclusion, I was so intent on learning the new way of knitting that I was gripping the needles with an iron fist, hence the sore hands and wrists!!
I can usually knit for many hours using whatever needles I happen to pick up without any problems.