Are 50gb blurays less likely to read in some drives?

I haven’t trusted them much as yet, as I’ve written a second copy of data onto 25gb discs. Would be nice to know for sure, so that I can save space and exclusively use 50’s.

Also I was told that LTH/HTL (one of the two) don’t read so well in some drives, is it easy to identify said drives so I can buy one and know for sure that it’ll read them?