Just keep in mind that if you have two Apple ID's, and one of you buys Angry Birds and the other likes it and want it too, you will have to purchase it again. Your apps are tied to the Apple ID account, therefore, two accounts, two purchases.
If you share an account, you can share apps. Give each iDevice a different name, left hand column, under "Devices" right click on the iDevice name and give each iDevice a unique name.
- On the Summary tab, check "Sync only checked songs and videos".
- On the Apps tab uncheck "Automatically sync new apps"
. Now go through and check on the apps, photos, etc. you want on your iDevice and then sync. Remember, a "checked" item will be synced to the iDevice, and "unchecked" item will be deleted from the iDevice.
Now, when the other persons iDevice is attached, they can do the same thing, independent of your iDevice, but, you will be able to share apps, without purchasing them again. My iPad, iPhone and iPod Touch, all share most things, but have some things only on one or two devices all on one account/Apple ID.