What integrateds that work well with Gershman Loudspeakers

I am interested in upgrading my current amplifier. My 2 channel system:

Linn Sondek LP 12, Lingo, Ittok, Dynavector XX2 MkII
Accuphase DP-500 CD player
Accuphase E-305 integrated
Accuphase T-108 Tuner
Gershaman Avant Garde loudspeakers

The amplifier is now 20 years old and I am interested in an upgrade. The Gershmans are new this year as is the CD player and mods to the Linn. It has been suggested that the Gershmans perform best with higher powered solid state amplification. The products under consideration are:
Accuphase E-450, Damut D-150 or Pass Labs INT150. All are relatively new models and are not available for demo at most dealers in my area. I
would welcome feedback on any of the above mentioned models or other suggestions.

Regards,
Gary
Any comments or suggestions on any of these