Yep our research is the same! I'm also almost ruling out
ABD because Sharm seems like a waste of time, especially when there's so much they don't go see.
I like Viking, but they book 2 years in advance, and their audience tends to be much older. Not sure I want to be the youngest in the room. Also, we don't drink at all and don't enjoy alcohol based events so I'm looking to avoid those.
I've read some rough reviews for food on AMA but that's my only problem there.
I hadn't found any detailed reviewed on the Nat Geo, except that inner-country flights aren't included and it looks like there are a few of them.