We weighed ours. Mantra was almost oz over. Both 33/23 and 32/22 ghost dual stamp were exactly oz over. The anderson 34/24 weighed right on. As far as performance we are still breaking the mantra and anderson in but the balls are already hitting the fence with both. They love their ghosts still,but just a matter of time.
I received the 32/22 and the out of the wrapper performance is fantastic, BUT my daughter just loves her Mizuno F21 pwr crbn and refuses to switch. So if anyone wants a quick bargain before I send it back give me a shout, $275 unless you're West coast then add $10.