My wife has some needs, specifically is after a music player plus needs a smartphone. I think her smartphone needs could have been easily met by some other phone, but iPod/iPhone is one of the better solutions in terms of playing/buying music so it's all nicely integrated into one device (+ maybe something with a dock / airtunes for playing out loud). Now I already have purchased a considerable amount of apps and music and I think that it makes most sense to still use one apple account to share the burden of costs, ie we would have one iTunes library and one account for purchasing apps and music. Would you recommend that? Are there any downsides to such a setup?