What a surprise! Good to see you here again, after so many years. Lots of things happened to me, from which the most important was the re-location to Ireland in 2013. I hope you and Cris are well, and you'll have the time and energy to fully return to TN.
I think identifying Hypholoma fasciculare is easy: the bright, yellow-lemon stem always corresponds, while H. dispersum has white, in old age brown one, but the snakeskin-alike texture is very characteristic. H. fasciculare's growing on any kind of wood, but H. dispersum's exclusively on conifers, on very rotten chips or in needle litter. While fasciculare's very common everywhere, dispersum's rare: in Gougane Barra (coniferous forest on 137 hectares = 1,37 sq. km, huge woodland in the Irish context) I only found it in 3 locations, however, with hundreds of fruitbodies in each. Sometimes they've grown together with fasciculare, next to each other.