1. Which ones do you like to maintain for PVE and WvW?
2. How exactly do some of these things work? I haven't done anything with this stuff, but I sometimes see a consumable upgrade available (like a 10% Magic Find Banner for example). If I use it does it make a banner wherever I am standing at the time? If I use it does that mean that it's used up and no one else can use it or does every member of the guild get to use it and if so, how long does it stay available? I checked the wiki, guru and here but didn't find anything explaining this stuff and I don't like to waste resources on trial and error when I know people who already know the answer.