Well, a little bit of sugar, refined or unprocessed, isn't going to hurt you; even if diabetic. The diet sweeteners actually cause weight gain and more harm to diabetics. The research done on Splenda showed issues with rats with diabetes - yes, rats with diabetes. Hum, they DEVELOPED IT, you see.
I recommend using NO added sugar. Go with organic milk in coffee or tea; and no drive through coffee doo-dahs. They are replete with sugars, MSG, fake fats, etc. They taste good, but why drink your desert??
Eat and drink your natural sweetness. These sugars are in a complex form and have NOT been processed yet, and the body actually burns calories while digesting them. Plus, our brains need glucose. Let your body be the sugar refinery.
Use saccharin if you must - it's been around for 100+ years and is still the #1 substitute in Europe and Asia. Stevia has been around for 1,500 years. It is awesome. Try this link for an excellent, quality stevia product: http://www.nunaturals.com/products/stevia.html .
Agave nectar (the original ones) are good, Succanat unprocessed sugar out of the cane fields is what I personally keep in the sugar bowl, and when you eat a product that has some refined or natural sugar added to it, eat smaller portions and enjoy it.
Thanks to marketing campaigns, people are now afraid of their food, and definitely afraid of sugar. That's poppycock - there is nothing wrong with a little bit of sugar, preferably unprocessed forms.
If you want a soda, there are plenty of natural sodas available at your higher-end markets that are made with cane sugars, unprocessed sugars, and now with stevia. Boycott the junk colas - enjoy an occasional soda pop with quality. But have it as a treat; drink water as your mainstay.