Newbie (21M) confused on what bike to buy...Is FZX good?

My priority - family friendly and mileage

but should not be a ripoff in terms kf engine power either

budget - 1L to 1.5L

options I've explored -

Apache 160

N160/NS160

N125/NS125

yamaha Fzs

Yamaha Fzx

my favourite - FZX ...but a friend owns FZX and says it's a ripoff for the money and FZS is better.

He also said seat is too thin so bum gets stiff for the pillian (can i fix this). and also it needs gear shaft replacement in few years? I saw in a reddit post. So should I avoid both FZX FZS Here?

Also N125 is a good option for mileage and bajaj parts are cheap ....

Also I am a software developer, so i might have to spend time in traffic and I've heard some engines/bikes break slowly in this scenario asking a buck in repairs later. So should I avoid any of these?