What a sweet spot, Tri, well done! And nice sharpening, I know that level of detail is hard to get right. Was there a sink plug at the bottom of the whirlpool? ;-)
The 100-300mm is very interesting to me, it seems to share the dense,'robust' colours with the 35-135mm zoom (and thank you to photoe and John Black for a few pages back, great photos), more than the more delicate and even 35-70 palette.
inglis, I shoot it on the tripod but it does have a future with a chip on Sony for SS, and I will do this for handholding, since it impresses at close range. David, who converted it to Sony mount, suggested one for 300mm but I think either 100mm or 135mm as it is best in that range. I'll post more big country 'scapes soon, from places no one goes.