Evernote

PROS:
- Take image, text, and audio notes/ideas from anywhere, anytime.
- Data stored on the cloud for access from any device
- Well designed/developed with many impressive features

CONS:
- Must be online to access notes unless they're marked favorite
- Getting things done and organizing is not the app's focus
- $45 Pro version is needed use Evernote effectively

Remember The Milk

PROS:
- Simple and easy to use interface
- Integrates with Gmail, Google Calendars and Apple iCal
- Manage/update task lists no matter where you are

CONS:
- It's deceptive to list the price as free when it's truly a "trial" for a $25 app
- Seeing the whole task title and notes requires a few clicks