Gonna buy a premium which one out of these trees are gonna be fun

So I have the u.s. maxed, Germany maxed, Russia maxed, Israel maxed (in every tree the have)

I’m looking for a new nation to start that even with the base tech tree vehicles is going to be fun, im leaning on Japan but would like some input as I play all game modes respectively meaning tanks, aircraft(helis and jets) and naval I just need some insight.

I do want the Yamato very badly so maybe that’s the route I go but it seems a premium for them is midish

I’d like to also get the Chinese variants of the sukois but again it seems ifish

I do want to say I don’t have to have a premium to do this but would like to as I have that expendable incomer so I guess let me know?

I have 9.4K hours in this game 2k of the ode being inactive but I genuinely do play this game and just want to save the most painful nations for last