They have a really nice website, somehow it reminded me of the house of the wicked witch from "Hansel and Gretel".
Let's see what they say about the safety of sucralose (its trade name is Splenda, but its included in a wide variety of food items):
McNeil Nutritionals, LLC is committed to developing innovative nutritional products, such as the SPLENDA® Sweetener Products, that provide important health and lifestyle benefits to consumers. The company is extremely proud of the strong clinical database that supports the safety of sucralose, the sweetening ingredient in all SPLENDA® Sweetener Products, and we recognize that this strong safety evidence is one of the many reasons why SPLENDA® No Calorie Sweetener has been the number-one low-calorie sweetener in the U.S. marketplace for more than three years.
Unfortunately, I found too many websites that contradict this statement. Unlike the manufacturers of Splenda, they don't have (well, most of them don't) any financial gain from telling that sucralose is in fact a chemical that can do you more harm than good.
Instead of providing explanations taken from other websites, let me paste here some of the sites I found and are worth reading:
I don't know for you, but I'll stick with raw honey and Stevia.