I'm the happy owner of one of these 3.5 tops JMadrigal signed, and all I can say, it's that is now my favorite top ever!
Of course S8 and quicksilver are good top, specially for fast combined tricks, but this format is much more enjoyable for everyday play, I can actually do all of the tricks I know with it, of course with some limitations, like a staircase to heaven is done with less turns, soma dvantages also on aerial tricks, with a bigger tip, it's easier to catch...
In conclusion I would say: thes are just amazing tops!