I like Gerritt Cole. There's no substitue for raw power and mid-high nineties heat. He's durable, polished. I think he'll have a big year and be a top 3 pick.
I assume Cole and Rendon will be gone by the time the O's pick. So that leaves us Norris,Jungmann, Gray, Purke and perhaps Springer if you want to add a position player. Gray scares me because how many small skinny guys can throw that hard and stay healthy. Lincecum is the ultra-rare exception and I do not think lightening will strike twice. Injury risk scares me away on Gray. Purke is polished, experienced, and a top talent. He'll cost a ton to sign. Norris will too, but I'm really big on him.