Call me crazy, but I prefer using the soft tip D'Light Thumb Tips, just pull out the electronic part.
Doesn't that make the device pretty expensive?
I have a very thin, cheaply made, super-soft one from the site mentioned before. I prefer it for the one long silk streamer I own --- something I've managed to get in trouble with, actually. Anyway, the things are so cheap that you can try out probably 3 or 4 different models and still pay more to have your box shipped. Most of the time I'm using some variation of a Vernet.
Call me crazy, but I prefer using the soft tip D'Light Thumb Tips, just pull out the electronic part.