Your room size may also be a consideration.
Given the fact that many Merlin owners use the 60 watt Berning to drive their speakers would suggest that for most people, this power would be sufficient.
Also, the difference between a 80 watt amp and a 100 watt amp is about a 1dB increase in volume. Not much difference there. However the VZN 100 is a mono block vs the VZN 80 stereo amp.
If you plan to buy used, the $1000 difference in price would have me leaning toward the VZN 100 mono blocks. But that's me.
Given the fact that many Merlin owners use the 60 watt Berning to drive their speakers would suggest that for most people, this power would be sufficient.
Also, the difference between a 80 watt amp and a 100 watt amp is about a 1dB increase in volume. Not much difference there. However the VZN 100 is a mono block vs the VZN 80 stereo amp.
If you plan to buy used, the $1000 difference in price would have me leaning toward the VZN 100 mono blocks. But that's me.