Well Jet service stars are easier than Heli service stars, but Jets are harder to get kills. However... the F-35 on Wake Island...
I use A-10/Frogfoot. I get easy 30+ Killstreaks in them if the Jet oponent puts a even match against me or 2-3 people try to Stinger me. I only met one player who has been able to even match against my flying. Everyone just got owned by me or tried to use
a Viper/Jet against me. If no Chopper/Jet is after me I destroy vehicles by one airstrike. Sometimes Infantry if no one gets in any.