If this is a serious relationship where these items may end up in your future home, you need to worry about the WAF (in your case GAF). And if these items will be under your control some day you'll want to upgrade (in this case replace entirely).
Lets face it, she'll love unwrapping the big box, she'll tell you she loves it, but it will be your baby. You'll set it up, you'll have to teach her how to use it and you're the one who'll get blamed when somethings wrong (and it will, it always does).
My wife is, as I like to say, "AV impaired". Loves what the things can do, doesn't know how to make them do it.
Go to the jewlery store and buy her some female BLING BLING
It's what they really want.