If you look to GP2, the really impressive performers this year were Vandoorne and, to a lesser extent Marciello. Then you've got the likes of Evans and Nasr who have potential, but probably need another season to be fully refined. And then there's Cecotto, who despite being in the sport for five years, really improved his driving standards this year and proved to be fairly quick. I'd consider all of them before Palmer, who is in the Paul di Resta camp of not being as good as he thinks he is.
But maybe I'm biased. His reaction to Max Verstappen getting a Toro Rosso seat was disgusting. Where everyone else congratulated and celebrated him, Palmer was an arsehole about it on Twitter. His jealousy was palpable.