Read somewhere the P51 took between 5 and 6 minutes to reach 20,000 feet... haven't done a check yet what was the most efficient climb airspeed I wonder ?
Afraid I've wandered from the fold by picking up a $10 IL2 and now BoB with huge update download in progress BoB WoV looks like the next late Christmas pressie
My first love is CFS1 it may be old simple and prehistoric but, for player interaction, I reckon it's still the most fun.
Having said that, I've got into IL2 FB, AEP and PF as well so I can learn it for next April (...ish) when they're bringing out BoB (Battles of Britain) and that may finally tempt me from the CFS fold.