It really depends on what you're doing/how long/etc.
I personally only use the 3G if I'm actually online & turn it off when I'm done. Voice calls & texts work fine without 3G on. The same goes for WIFI & location services (for maps). Leaving all the options on WIFI (and searching for WIFI), 3G, location, push email will all drain the battery. Hope that helps.
As for the breakfast, there's an app for that under the paid tab :icon_tongue_smilie:
They truly are a great bit of kit, I've got the 3G not S but it is excellent and well worth the money. I too aren't swayed by brands or what is cool, but the features, ease of use, user experience just speak for themselves.
Can anyone recommend good design/development orientated apps? I have adobe ideas which is perfect because I always need a pen and paper and I have got the abduzeedo blog - i'm a huge fan of their daily inspiration feed - just got it so thought i'd share and enquire.....