LDC: easier to correct digital errors. lower is better.
BIS: harder to correct digital errors (but still correctable, up to a given limit). lower is better. lower = less need to apply deep error correction = can be read at full speed.
Jitter: uniformity of the (lands and pits) in the disc. Lower jitter = better physical uniformity = easier to read in a mechanical sense.
I could go more in-depth, but I leave that to various articles littered elsewhere on the forum (which I'll link to at another time, if so desired)