Anyone growing/has grown Mitoyo? What size to pick?

[gorbelly]

I'm growing Mitoyo this year, and I have fruits growing on all 3 plants. How large do these get and what size is best for harvesting?

And generally, how do you know when eggplants are ready to be picked? I'm growing Mitoyo, Aswad, and Thai Long Green this year.

I've picked my first, which was a Thai Long Green. It was resting on the ground, and I didn't want slugs or other critters to get it, so I picked it at about 8 inches long.