I haven't updated this in a while. I have had the opportunity to try a few more brands of Ginger Beer.
A store in the Sacramento area that carries British items imports Idrus and Schweppes. Both of the imports from the UK use a mix of sugar and artificial sweeteners. The Schweppes tastes like I remember Ginger Beer as as kid. However, River City Brewing recently started showing up in Nugget and Raley's/Bel Air. This is now my new favorite.