I am looking at buying Leon Morris' discounted commentary on John in the NICNT series. I already have Carson (Pillar), Köstenberger (BECNT), Smalley correction: Beasley-Murray (WBC), Lindars, Keener, and Lincoln (Black). In light of this, I don't want to pick up a volume that would prove to be largely redundant. I have two questions then for owners of the volume:
1. To what extent does it remain current or may be outdated?
2. In light of what I already have, if you think it remains a must-have, why would that be?