Different sorts of port wine

I've been reading to try and figure out what wine will be best for me, especially with the diabetes.  A glass or two actually helps keep the diabetes under control.  But the fortified ports may have too many carbs.

http://www.dummies.com/how-to/content/the-styles-of-port-wine.html

http://www.wineloverspage.com/port/jbl030197.shtml

http://www.bellaonline.com/articles/art2683.asp
As a guesstimate of a range, I'd say a regular / vintage port is about 6g per glass, and that tawny port is more like 8g. Remember that alcohol just by existing interferes with your weight loss, so be sure to go easy on alcohol when you're trying to lose weight!