I have the my2017 executive edition and my friend has the pre facelift executive edition, i also initially thought I'd be disappointed not having full leather but the tahara trim is actually very good and it blends well with the leather, so it wasn't a big loss for me.
again the parking sensors was also a concern but it has a rear camera instead - it's an easy car to park and the camera makes being accurate very easy so I've not missed parking sensors at all, in fact it keeps the car very very quiet!
the LED headlights and auto highbeam are excellent, as is the radar cruise control.
personally I think the executive Edition is al you need, your certainly won't feel short changed by getting it...the advance brings A few extras but personally for me they don't quite justify the price difference.
hope this helps