I've been using Simplenote more and more after first flirting with the service in July. I always have my iPhone on my person while at school and I'm constantly needing to "scribble" down notes and information from students or other teachers and Simplenote has been a great addition to my sanity arsenal.

However, I keep hearing great things about WriteRoom from folks like Steve Rubel.

Anyone have a preference?  I'm needing:

- Hassle free note taking
- Web sync
- Ease of Use

Simplenote solves those issues for me, but I want to make sure I'm not missing out by not using WriteRoom.