I'm with you on decreasing the ironing pile

I used to wear more V and scoop necks, but started preferring higher ones in the past couple years. My bust is (too) big, but I'm short waisted. The higher necklines (at least if I have bare legs), seem to give me a longer line.

That said, I prefer a (modest) V or scoop if I'm wearing a jacket, so I don't look so blocky.
Keyhole necks, as long as they're not too low, work best all round. I like halternecks too- the high cut ones, not the skimpy ones.

I will go back and read the blog post that Suntiger linked. I tend to go by feel and intuition.

You know, I always thought I was a scoop neck, v neck person. But lately I've been wearing more boat neck or crew neck, and it looks good, and I am surprised. I always thought I needed a little skin. But since I am more in shape now, I can do more necklines.

Interesting video. So with my long and narrow face which isn’t much wider than my neck, I guess I would end up with a deepish and narrowish neckline. My chest is small for my frame and sits high on my torso; deep necklines often feel immodest when I am sitting, leaning forward, breathing, or moving, etc. For comfort, I have to wear a cami or tank top underneath. Should the deep neckline be a V-neck or deep scoop? My best guess is the V. I favor sharp and sleek straight tailoring and anything too rounded or wide starts to look sloppy when I wear it. Strangely, I have very few V- Neck or deep narrow scoop neck tops. Lightbulb moment as to why many of my tops don’t feel right!

Staysfit- I agree, it is a bit of a guessing game. So far I've just been relying on what seems to work visually but I've never understood why one neckline works better than another.

I also don't understand why one neckline works better than another. I prefer a crew neck, scoop neck, loose mock turtleneck or button-up. I tend to stay away from v-necks. I think they look harsh on me.
To make things even more complicated, I can't stand the feeling of anything around my neck. I stopped wearing necklaces for years. I have recently started wearing delicate chains again.