I played Ace Combat 5 and 6. I never actually bothered with Assault Horizon and just watched a walkthrough...the helicopter and AC-130 missions kind of broke the deal for me. No judgement on Infinity though. On one hand it's a more traditional AC game and the multiplayer's nicer to get into...no high-G turn QAAM dance of death. But the F2P system feels like it's been ripped straight out of a bad mobile game and the full singleplayer campaign isn't even completely out yet(?? Last I checked, at least).

I remember picking up AC5 because I was wandering Best Buy one day, looking for Lethal Skies 2...spoilers, Lethal Skies 2 is obscure as fuck, according to Youtube.