[Dr. Sivana]

Rubio has consistently impressed me. He comes across as highly intelligent, genuine, and knowledgeable. There is something about Vance that is off-putting to me.

I saw him give his stump speech at the Georgia state convention in 2015. He did not tailor it for his audience at all, and came across as wooden and uninspired. He has upped his game since then. Oddly, Christie gave the best presentation, with Cruz (whom I supported the time) being a little bit too smug and also sticking to standard talking points. Trump had no presence at that point, and John Ellis Bush had paid minions who were there, but had no buzz. I think we saw an unimpressive video of Fiorina, but that might just be Mandela effect.

[Biblebelter]

came across as wooden and uninspired

Would you say programmed?

That was certainly how he looked when he melted down when confronted by Krispy Kreme Christy at the New Hampshire primary in 2016.

[HonkyTonkMan]

Vance - comes across as lecture-like, responsive
Rubio - direct, includes "here's why", leadership
Christy - great speaker, lacks follow-thru
Cruz - dominates debate, can appear whiny and sometimes disinterested
Carly - unmemorable, odd for a marketing exec

Just my .02