Hey Marbles. Jap Strats are supposed to be good. Dimarzio was one of the first aftermarket pickups and have a strong following. IMHO a good guitar is one the musician feels comfortable playing. The most important thing is to make sure it is setup properly. Stuff like neck geometry, string height and intonation. Keep the strings clean (wipe down after each use) and change them fairly often if he plays a lot. Get a 'peg winder', a cheap tool that makes changing strings a lot easier.
What do you have for an amp?
If we all get together again, we'll have to have a jam session!
give my regards to the family,
doc