Good to see you back in the reviewing business, I appreciate your taste and reviews. I still find the 101, (having just recently done side by side with the regular 101, the 8 YO, the RR 101, and the 12 YO) to have a bit of roughness that has been polished by the others. Tastes being what they are, you may appreciate the very thing that I find slightly problematic.
Still, you are spot on with the RR 101 vs the RR 90 in my opinion, but the price hike is hard to swallow.
Do not go gentle into that good night,
Old age should burn and rage at close of day;
Rage, rage against the dying of the light. - Dylan Thomas