I like them firm without the brown spots.

I think they taste better with slight green rather than slight browm

I like them a bit on the firm side. When they get too ripe, it's banana bread time.

I try to find the greenest banana bunch to purchase because I know by tomorrow, they will be perfectly ripe and the following day they will start to get spots. I like to catch them just ripe but will make banana bread or muffins with the too ripe ones.