Just fly the whole planeset.
If you can't make up your mind, throw a dice or toss a coin. I often do that.
The whole planeset will teach you a lot.
If you're moving from SpitV to 109, I'd recommend the F to begin with, then G2, them G10.
The F is very agile, while the G2 is somewhat faster and a good climber.
The G10 is fast, brilliant on the vetical, but a tad too stiff IMHO.
Best of luck!