Delicate instrument not a "panic" or "magic" cam
I have been using 0.5 for a bit more than two years and have had only good experience. In fact, I took a short fall on what I considered a poor placement of 0.5 in a flaring crack and, to my surprise and satisfaction, it did hold. So I could have given it five stars based on my experience. I was considering buying other sizes to double my rack. However, I found way too many stories on internet of these cams breaking and failing and I am having my second thoughts. I believe these should not be used as "panic" or "magic" cams. Yes, they will go in easily, but, unless you put a lot of thought and skill into the placement, it may not be as secure as you think. The link cam appears to me to be a delicate instrument; C4 are much more robust and burly. I imagine that if the link cam is pulled sideways it may break due to a fine moving part (and there are way too many such) being loaded in the wrong direction. That can happen even to a seemingly perfect placement, if the cam walks due to rope drag. So I second the reviews that suggest that these ARE NOT FOR BEGINNERS. Since I consider myself still in the learning phase, I will wait with getting more of these. Meanwhile, I will double the rack with other brands (Metolius Ultralight seem appealing) and use 0.5 for what it may be suited best - back up peace for anchor building and in weird places where other cams do not fit.