I've had some Diet Pepsi (or Diet Coke*) each day this week, but just with lunch. I haven't broken down and bought a 12-pack for the house. At some point this week I will pick a day and make that my dry day.**
*Diet Pepsi is always preferred, but Diet Coke will do in a pinch. If it's from a soda fountain (like today from Una Mas) Diet Coke is almost as good as Diet Pepsi.
**Dry is a bit of misnomer, since I drink more water (another reason to quit) when I'm not drinking pop, and I actually pee more, even though caffeine is supposed to be a diuretic.