How many spi

I swatched last night for my Sockintine Sock Swap and with size 2 I get 8spi and with size 1 I get 9spi-what do y’all think would make a better sock fabric, I’m using regina bamboo yarn ?
:shrug: :??

I read in a book once that you want to go with the tightest gauge you can that still gives you a nice fabric. So in that case I’d go with the 9sts/1".

thanks my dh said to go with the 9 spi too. guess I’ll be casting on tonight