I've had no issues with iOS 6 on my iPad 2. It works fine. no compatibility issues, no Wifi issues or anything. As for waiting, there's no guarantee the next iOS update will be applicable to the iPad 2. Just like iOS 6 could not be applied to the iPad 1.
I would like to add one more question phil, since I would like to update to my iPad to iOS 6 and this is the first time I'm updating the device which is safer 1. Directly downloading the software to iPad or
Most users haven't had problems with iOS 6, however, some have. I'm still using iOS 5.1.1 on my iPad 2. There is a beta version iOS 6.1 being tested. Don't know when it will be released. When it is released, I'll update.