Personally, I don’t find there is any big different between those stylus pens. What bothers me the most, is the palm contacting issue. Even though many apps have developed a palm rejection, it often got override by the multi-touch gesture in IOS 5. Every time I rest my hand on the screen it starts to do something crazy. I just have to left up my hand the entire time.
I ended up buying a physical handpad to solve that. You guys may wanna check it out. It's quite affordable, and come with a pen.
If you are interested, you can google "stylus handpad" and you wil find it. It's worth a look.
