I bought it's ceramic cousin, the WGS G8C, for my Tweed tones and it was a great fit. I think the Jupiter and Fat Jimmy versions are refinements of this speaker, and I do want to try both versions eventually. The Weber Sig 8 that I had before made me dislike 8" speakers.For a long time, it used to be that there were no good 8 inch options, but Jupiter do some nice stuff now.
Products
jupiter-speakers.com
As for 5W amps, here's my contribution: some audio examples of my Tweed Champ/Princeton clone, captured through NAM.