Pro-Mold Magnetic Card Holders?

[jchcollins]

Does anyone have experience with these types of holders? I tried their screw-down cousins for the vintage size last year, and was not impressed because the cards move around in the holders too much - moreso than in a PSA case. They do have the diamond-cut corners so that you aren't going to get corner dings if the cards move around, but still - that's not something I'm cool with for valuable vintage cards. Cards don't move around in top-loaders with penny sleeves, or in Card Savers, so why should they move around in a hard case?

Here is a link:

https://www.amazon.com/Display-Pro-M...ic+card+holder

My question is, are the magnetic cases any better in terms of the cards sliding around? I would like to pickup a few of these in post-1957 size to put a couple of nicer cards I'm keeping raw in, but don't want to go through the hassle as with before to return them if it's same old thing with slip n' slide in the holder...

Thanks.