I have a Zu Denon 103R that I've had the ESCCO mods done on (sapphire cantilever, Paratrace stylus), and used in conjunction with a Dynavector 501 arm, has worked out to be a great combination.
The matchup was a good one before the mods, but they took it to a much higher level afterwards. Whether or not any 103 is worth using with a world-class arm is a question better answered by someone that has tried the combination.
Regards,
Dan