well i know me Game and colsey on here have owned them
My personsal experiences with them were some what spotty. When it worked it shot great, just like an ego but with noticably less kick and tighter shot groupings
(i now y'all think that bull).
I also found the trigger to be the nicest i have shot.
However i had many tech issues with the thing.
When i first got it, it was velocity ramping
sorted that, then it had shoot down
replaced the reg and it shot ok
they are also very very battery hungry
but they are relatively cheap and if you get one that has no tech issues or sort it (replace the hpr) then they are ok.
all based purely of my direct experiences of owning my alien
....also the alien section on pbnation was suprisingly civil