I've done the sweet stout, and well it didn't turn out so good. It tasted like molasses. I actually had to mix it with a different beer to be able to drink it. I go through northern brewer alot and don't know if that beer just got infected, or if it was just a bad batch. I still love NB and would always recommend them, but that beer just didn't turn out that good for me, let me know if you have better luck with it.
Primary: Pale Ale
Secondary: Gint's Two Kidney Ale, Oktoberfest, Conway's Irish Ale Clone, Shiraz
Bottled: Apfelwein, Green Apple Reisling