I wonder why he keeps trying to push the Kent Armstrongs on you?
I'd go for the Duncan's, they are tried, tested and alot of top bands use them.
If you install the Duncans and think they are too bassy, change your cap for a more treble friendly one and/or adjust your EQ, but i think you'll love them. Chino has started using them and Billy Corgan does now too, they are hot.
As for the Les Paul copy, JB all the way.