I am also very new and have only played 2 lines, but have watched twitch streams for some 'reviews' via live play.
I think for turn fighting (dog fighting) I picked a good like with the British Spitfire line. That like looks good from start to finish. It is great in mid-tiers where I will be learning the game. I like the addition of cannons for the Tier V. Machine guns were getting kinda pew/pew by tiers V and VI.
On the other than the German BF109 line has taken much longer to get the hang of. I think most get what you have to do in a dog fighter, the whole energy fighter is a different beast altogether. The Tier V 109E is a joy though. You can learn the skills you need for energy fighters (boom and zoom) in that plane. It is all about it.
GLHF