Chronos has updated StickyBrain and seems totally worth checking out. You can collect and manage notes from all over your system and SYNC to either your Palm or iPod. You can also link to your Address Book as well as Mail. I’ve just downloaded it and will be moving some stuff I’ve been collecting in both Omni Outliner and NoteTaker to see how I like it.
UPDATE — Stickybrain is nice, but only allows for flat or rich based text. No outlining. This is a bummer since I was hopeful with the sync option. For now, I’ll probably keep going with Omni Outliner and NoteTaker (still deciding which will be my primary tool) and Life Balance for integration with my GTD system. The nice thing about LB is that you get the same full file on both your Palm and desktop.