Just got these props in the mail few hours ago, was flying the dal 5.45 v2 tri props I adjusted zero pids and just took it for a quick spin on my mb epic 229 go pr quad with MB 2206 2400 kv 4s, I have to say I am very impessed with this prop, it feels like it delivers the same power as the v2 yet its more responsive, these will be added to my fleet of copters, any questions leave it in the comments thanks.