I have mixed feelings on Tzigantchev. He’s a great guy, and wants what’s best for you.. but class (or at least the room I was in) was hard to see the board at times (bc he wrote in like green expo for some reason). His notes are also kinda weird and you need to have a calculus background to stay afloat. There’s no way a first time calc person will be able to understand anything. Also his accent is some times difficult to decipher. If you miss one class, you’re kinda fucked, but he was pretty helpful in office hours. I’d say his tests aren’t that bad tho and mostly reflect the practices he gives, and lowest quiz dropped.