I like mine, fast nimble yoyo. I did have a slight issue (fixed it myself) where my nightmare kissed the ground (indoors) and the ring was starting to come off. The axle is way too short for my liking so I seldom take it apart unless I absolutely have to. Feels like a slightly lighter Pulsefire (since it’s shape is very similar, but 6061 aluminum and different ring design)
I have 3 bimetals: steel, rainfly, and pulsefire and ever owned a berserker ss
so for below $120,imho:
steel: strong spin like bimetals do, good for speed, felt a bit narrow to me
rainfly: strong spin too like other bimetals, a bit heavy, but really really good and slacks and whips trick
pulsefire: feel like monometal when it speed, more like balanced player, good at speed but not to fast, and also good at slacks but not the best either
sorry for my bad English