Ive downloaded almost all the todo apps on the store, and this one wins. I have my todos and notes available and in sync on PC, iPhone, and iPad. The app is rock solid, never crashes, and the sync requires zero attention, and everything Just Works. If you want, the app can be simply used as-is as a todo tracker, a habit tracker, or else under the covers there are a wealth of options and customizations to tweak the app for hardcore GTD/GSD applications and methodologies. This is the benchmark other apps have to measure against.
Ac1637488262 about Toodledo, v3.3.6