I have 3 pairs of these (along with a set of the GG LT4's). The Cascade Mountain Techs are the best of the lower end poles by far IMO, certainly the best poles for the price. But I've broken several sets at the twist lock adjustment. I scavenged the broken sets to keep a few going. There is some encouragement in them in that I've been using my last set for more than a year and a half now (I was out for 7 months of that due to injury) and several hundred miles on mostly rocky terrain with no issues, and this with extending and retracting them for every hike, 2-3 times per week. It seems the key to longevity has been to avoid overtightening, and to store them with the twist locks loose. Also, they now offer a lever lock version on their website for a few dollars more. Mine weigh 14.4 oz for 2 poles, and the grips are comfortable, although not as comfortable as the GG.
That being said, I like the Gossamer Gear poles better, lighter, more comfortable, only one adjustment rather than 2 (the weakest link), but 5 times the price. I would prefer lever locks on the GG as well, although the only set of lever lock poles I've ever owned broke at the adjustment locks too.