I have a vette and mustang, two different cars. You need to drive both. Vette is smaller inside, rides rougher, isn't as practical, no back seat, etc. I had a 2014 fully loaded z51 vette for a week. I enjoyed it but it was cramped inside and slow. Nothing a $5k supercharger doesn't fix but still I couldn't stand driving it stock.
As for attention, vette got plenty of it, and even when they become common vettes tend to turn more heads and get more attention in my experience. That being said if I had to pick one car to daily drive I would take a mustang over a vette. Just fits my driving style better. If you wanted something as a race car, autox, road course, then go vette.
Either way go drive them. Some people can't stand how the vettes drive and others love it.
As far as insurance, Vettes are stupid cheap to insure. Insurance isn't based off power/etc it is based off claims made/actuary tables. Average vette owner is something like 66 years old and drives it 3x a month. Hard to wreck or get one stolen when so many of them are garage queens. Vettes are strangely one of the cheapest cars to insure because of this. I pay $600 a year on my z06. It is 1/2 of what my 2012 mustang is.
Bought my z06 when I was 28 and the mustang when I was 29. Mustang was only slightly cheaper than the vette. Vette was $40k mustang was $35k.
