75 or even 80 will be more potent if you want the stoned effect that I treasure so much mate. But if you want to do cartwheels in your driveway then 70 would be good. On a side note everyone says barneys seeds sucks but that plant looks juicy. Guess to each his own eh?
idk man ive heard some bad things about pineapple chunk but critical kush has its own thread with tons of info and people saying its pretty good. but it seems like every seed bank has something similar crossed with critical mass