Hey Joe, I will defer to Chad regarding air time for the Pletty powered models, he has probably had more flights on these that I have had cups of coffee!

I fly a Hacker and I get 9-10 minutes flight time on a 2m plane, as I land once I get the 30 sec "beep". Inrunners are more efficient and use less power for the same type of flights. The limitation is that the outrunners unload more in the air and give you that "unlimited power" feeling that can be lacking on the Hacker (depending on the battery). Let me say, however, that if I am practicing tall manouvres I cut the time back a bit (maybe 8-9 mins). Most I have put back into my 5350 packs is 4500mah which is pushing the pack too hard, most of the time I put back about 3500-4000mah.

Simon