Heavy, but that’s because I’m kinda violent with mine. It gets thrown around hard and rough, and lighter ones can’t really take that. They get skewed pretty quick.
I like light yoyos that have a little heft to them.
Light for fun
Heavy for stability
^^
I tend to like yoyos that are between 65-72g ex. Yeti, Puffin, ( a lot of CLYWs ) 
I enjoy playing heavy to mid weight throws the best, but once in a while, I’ll play something lighter like a SPYY Addiction.
Heavy. I feel like I have more control over the yoyo
Around a Shutter weight.