String theory bandit feels like a heavy piece of lead attached to a string. However it still plays great and solid. It’s pretty slow but can be pushed to decent speeds.
The yoyo Landon won the mod contest with weighed around 100 grams I believe. It was very heavy and slow…and big. Like 72mm Diameter I think. It’s good, just don’t do finger grinds and get one of your digits to close to the edges. I did and it took off a good chunk of my pinky nail.
I tend to lean towards heavier throws as well so I know how you feel. I’ve played with many of them, but none play as heavy and solid as a Dif-e-Yo Tank. It’s not exactly modern but I’ve always been a big Dif-e-Yo fan and the Tank is still by far his best throw IMO. All of his throws play very solidly and you really can’t go wrong with any of them if you like heavy throws.