All media will display C1 errors to some degree. Most errors are on the inner or outer edge due to manufacturing quality. C2 errors indicate that there was additional error correction needed to recover the data. You generally should have few, if any, C2 errors on a recording. Too many indicate poor media (most comom) or a recorder problem.
The Premium definitely wrote a better disc, but your Lite-On disc doesn't have a lot of C2's and no CUs, so should be okay if handled/stored properly. Remember that fingerprints, scratches, etc will cause errors, and if you're starting with marginal media, it won't take a lot to become unreadable.