although i love my denise needles, if you use size 5 a lot, i don't recommend them. the cords are actually a bit thicker than a 5 needle, so the yarn doesn't move smoothly as mlcrays described. i haven't had any problems with any of the larger size needles tho.
thank you so much for saying this! i am using my 5s for the first time (i've had my denises for a long time, but i never knit anything in that weight/gauge) and i thought i was losing my mind! haha. i'm glad to know i'm not the only person who has to shove the stitches around.