Tasos1,
Excellent review of the Yamaha A-S2100. Your thoughts and descriptions mimic almost exactly what I feel about my new(4 months) Yamaha A-S1000 integrated. As the little brother(48 pounds) to the 2000, 2100, and 3000, this 1000 is no less overbuilt with high quality parts as it's siblings and does not take a back seat in sound quality if only slightly I'm sure.
Those cool meters on the 2100 and 3000 are awesome.
Enjoy,
Bill