Best place for improv classes?

Hello all, I have a friend who’s interested in taking an improv class and got me interested too.

As two middle age dudes, does anyone have any insight into the places that offers classes for improv?

I’ve seen classes at The Nest Theatre, Hashtag Comedy Club and MadLab, so if anyone has taken classes at these locations (or any others) I’d love to know about your experience and if you’d recommend.