It's the best program out there for tracking this stuff on the Mac, but unfortunately:
a) the $35 price only includes one year of updates and if you unwittingly download the latest version after that year is over, the program goes back to demo mode until you pony up. In other words, it stops working.
b) version 4.5.2 is sloooooooooow. Much worse than previous versions. Double-click on a food to add it to your daily totals and the pie chart redraws. And redraws. And redraws. And redraws. And redraws. You have to watch it recalculate your daily totals five times before you can even enter a food, and this happens every. single. time. The pull-down menus used to be a little bit laggy but now it's just gotten ridiculous.
c) the un-Mac-like interface is all still there. (Command-A = add to favorites) Entering the nutrition information for new foods is totally unintuitive.
d) it still crashes if you open your log file while the program is open.
e) the new "personal info" area looks interesting but crashes every time I try to open it.

All that said, I still use it every day and I still recommend it until something better comes along (ideally something that can import the years of custom foods I've entered along the way!) It takes a bit of getting used to but it works, albeit frustratingly slowly now. Earlier versions are a little quicker than 4.5.2. The developer does respond to emails, so there's hope for the future.