I find them hit or miss.. The gym I go to has a lot of HS stuff.
Some seem to fit my body and some don't.
What I find really irratating is that I'll use one machine one day and it feels great. Feels like it fits, feels like it allows me to move like I naturally wood etc.. Then the next time I go to use it, it just doesn't fit anymore and I can't get it to fit no matter how I adjust it.
Like all machine, if I am using one and I can't get it to fit me perfectly, I get off it before I put any amount of working weight on it. In the past I've used machines when they don't fit just right and it often lead to injuries. I found this especially with hammer strength stuff and the smith machine... The smith machine accounts for the majority of my shoulder injuries in the past.
I love dumbells and barbells becuase I can always get the motion to feel great becuase I can adjust since I'm not locked in