I find wine suits me. I either have a glass of red wine or, if I want a longer drink, a white wine spritzer made with dry white wine and soda water.
If I'm drinking without food, then I tend to nibble on small amounts of carbs, eg crisps, as sometimes in the past I've found alcohol on an empty stomach can make my blood sugar go down a little. Obviously, don't overdo the crisps else your sugars will go high!
Spirits with diet mixers are also very good, as mentioned above, but i prefer wine because it lasts longer and so I get more sips per unit of alcohol.
I always test my blood sugar when I'm drinking, and I don't drink a lot. Maybe a couple of glasses maximum, spread out over a reasonable length of time. If you're drinking with a meal, it should be easier as the food 'soaks up' the alcohol, meaning it doesn't get into your bloodstream so fast.