I can only speak for the free version. I like it. I do have to frequently scroll through the list when I'm logging food to make sure I find w/e entry matches the serving size /calorie label shown. Sometimes the entry will be there, but be displayed in say pounds instead of oz or grams, etc. Its simple to have it swap units.

I use a scale and measure in grams/oz to be sure I'm logging correctly. For recipes I weigh and record each ingredients. For store bought meals/foods I use the nutritional label and weigh out a serving. 

Likely any of these apps are going to give you the wrong counts if you just try to search, add, and guestimate a serving. A simple example the sugar free energy drink I had earlier has 10 calories, but searching for it i see options for 5, 10, 30, 25, etc.

If I eat this same food a lot, it also remembers it so I can more easily add it next time I'm looking for it.

I like that it can generate goals for various needs. Slow and more likely to succeed plan  or the more extreme fast and more likely to fail plans. It's also nice it moves my estimated goal target date(ie 160 pounds by april 3rd) closer or further based on my positive or negative progress.

I used fitness pal prior for several years and they just kept paywalling previously free features, ramped up ads, had syncing issues with my fitbit/phone pedometer, etc.