The swing cheek ones with the orange wheels, classically carried for crevasse rescue, are not robust. Took a couple up a wall once and they fell apart around pitch 20.
You should be able to get some of the red 'fixe' ones as they are cheap and widely used in rope access. We have a load, they bend easily if used on a D-shaped karabiner which means they get binned regularly- I doubt they lose any strength but it is damage.
The ones to get are the partner - they look like the old lightweight ones but are strong and have decent bearings.