Is the professor "Mesta" new this year? I haven't heard about her yet. Trying to decide if I should stay or try to switch to Holmes class. Thanks!

If you have the option of taking Holmes, go for it.

I think Mesta is replacing J. Bruce, who I've heard is not returning (unconfirmed, but heard from a grad student in the econ department). She is definitely new.

Google her and you will find positive reviews from Waterloo and Laurier, so you'll probably be fine (although I second Humza, 2G/2X with Holmes was super painless).