General resource: http://coffeegeek.com/ - detailed info on everything; excellent product and procedural reviews; many good forums, particularly for homeroasting and espresso
Self-authorized authorities: http://groups.google.com/group/alt.c...nk=gschg&hl=en - excellent resource for general info to microscopic details; not a great place for casual posting - some Nemo-types here, but mostly over-caffeinated sharks packed in a fishtank, many sniffing for blood; many with commercial/professional credentials
I've been looking to upgrade my Silvia. The screw that keeps the showerhead has been frozen for years and I am unable to clean it out as I would like. I've tried several screwdrivers to no avail and don't want to break off the screw... That is my main reason for replacing it. Other than that, I have been happy with it.