I like opaque bags. Not clear bags I know what's in there I really don't need to see it except to empty.
But I also use a 2 peice. Drsinabke. I put the flange on first. I have pre cut wafers. Fit perfectly. But I don't think I could get a one peice centered over my stoma correctly.
I'd have to use a clear bag to do to a one peice.
Richard.