My favorite "dumb" stylus is the TruGlide Precision Pro. The microfiber tip is fabulous, and you can also buy a brush tip for it.
http://graphicssoft.about.com/od/iph...-Stylus_17.htm
I'm in the process of reviewing the three popular pressure-sensitive "smart" stylus pens that are out now. Hope to have them done this month. So far, palm rejection seems to be a pipe dream for art apps where need multi-touch gestures.
I read a great tip for "poor man's" palm rejection on the Procreate forum. Buy a pair of butler gloves, double them up, and cut off all the fingers except the pinkie.
http://procreate.si/forums/index.php?topic=1960.0
Keeps your screen clean, too!