I find that I use different size pots for different tea, and they really run the gamut. For yancha I have a 60ml pot (my smallest). I have a 150 (my largest)that I like for gaoshan and tightly rolled oolong. My other pots for pu and other teas are 100-120.
Where do you like your pot sizes to be?
What size pot do you like?
most of my pots tend to be around 150-160, that is because I made them myself and I somehow always ended up with that size, no matter how hard I tried to make larger or smaller pots 
Also I am too thirsty for smaller pots, with gaoshan you end up with very little liquid in smaller pots.
The smallest I use is around 100 for loose leaf teas, same as you like Dancong. Or some of the more expensive teas that I bought.
Also the size to sample teas, to be able to drink more than one in a session.
Also, I tend to share at least a few cups with my other half, so less than 100 is definitely to small for my thirst.
I tend to focus on one tea for a few sessions/days, so do not hop to much in between teas in one go.
Also I am too thirsty for smaller pots, with gaoshan you end up with very little liquid in smaller pots.
The smallest I use is around 100 for loose leaf teas, same as you like Dancong. Or some of the more expensive teas that I bought.
Also the size to sample teas, to be able to drink more than one in a session.
Also, I tend to share at least a few cups with my other half, so less than 100 is definitely to small for my thirst.
I tend to focus on one tea for a few sessions/days, so do not hop to much in between teas in one go.
My pots tend to be 160 ml - 200 ml and for pretty much the same reasons as Bok
I enjoy 60-100 mL vessels when brewing for myself and sitting next to the tea setup in a quiet afternoon or evening. But before work, when I have to be more efficient, or when I'm prepping to share with others, I mostly use 150-250mL vessels.