Best Integrated Amp? Help...

I am looking at spending under $2000, new or used.
I want a simple no frills integrated amp.
I am using B&W Nautilus 804s which can be demanding.
Tried a Jeff Rowland, and it would not work with them.
They have done well with Classe and BAT.
Looking in the 100W to 150W range.
Any help would be greatly appreciated.
Thinking Plinius 9100, Musical Fidelity A300 or A3.5.
Thanks.