I'm using BAMBOO stylus, but I'm having problem with certain screen protectors. (http://forum.lowyat.net/index.php?showtopic=2329452&st=0&p=51045513&#entry51045513)

I used Screenguard, and you have to apply some pressure before it actually detects. But when I tried on another ipad (also with SP on), it was slightly better. So I'm also looking for the right SP to use