I use the Daily Plate and really like it. I can't compare it to fitday, although I did use fitday a couple of times and had trouble finding the food I ate. I am using the free version of the Daily Plate.
What do I like?
1. I have found almost every food that I have looked for (even recipes like the Campbell's soup can recipe for Brocoli Chicken divan)
2. Even if I don't find an exact brand match, I am able to match the info I know from the food I ate and get an accurate calculation
3. If I can't find the food (one recipe so far) and I didn't feel like adding it myself, you can add manual calories
4. You can save entire favorite meals and just click and select (for example 1/4 cup egg whites, 2 tsp light margarine, 2 slices weight watchers bread).
5. You can get cool graphs and charts (weight loss over time, average protein over time, exercise over time, sodium, etc)
6. You can track your exercise each day (although the credit they give you for the exercise is kind of out of whack - according to the credits I am given for exercise I should be close to goal by now)
7. You can see some great recipes from people who have posted and calculated the nutritional content of what they prepared
8. You can add your weight and height and how much weight you want to lose per week (for example 2 lbs) and it will calculate the number of calories you should be able to eat daily and lose that amount (again uses science that my body doesn't particularly agree with

)
9 I found it really easy to use, and pretty quick.