In the classroom: I originally downloaded Sundry Notes thinking that students could use it to take notes, but after playing around with it I found that the inking was slow and would make for a very messy, painstaking process of taking notes. However, this app is ideal for students who are creating something - a poster, a project, a summary of anything. The fact that you can import things from the internet, draw, type, and even add sound recordings allows for a lot of creativity on the part of students. It also have a very intuitive user interface, whereas some of the other notetaking apps with the same capabilities are not as user-friendly.
Recommendation: I would recommend this app for project/picture/poster making, but not for notetaking. The search for a good note taking app continues...
Here is a sample from Sundry Notes:
Notice how you can add sound recordings: