What's your favorite canvas size, and why?

I've been using 32x32 a lot. I haven't explored a whole lot though and I'm curious what everyone's favorite canvas sizes are!

128x128 and 64x64 (sometimes also 256x224). Good space to play around and make pixel art not look so pixelated.

Update on this, 16x16 is definitely my favorite right now, I thought I would feel constrained, but somehow it feels like I have more room to play with!