CHM2211: Schantl or Portmess?

<p>I'm taking orgo 2 next semester, and I can't decide between Schantl and Portmess. I heard that Portmess is a very good lecture, but his exams are very hard and that Schantl's exams are easier but the format is confusing. How hard is it to get an A if I decide to go with Portmess? I had Dolbier last semester, and I didn't learn anything in his class. Any input appreciated!</p>