why
bought tickets for my day trip to GOP and i was like "hmmm, do i want a seat in 170A or 174A since i have had enough of 168A/111A-20 horrible brakes sound bullshit"and so
yeah
170A is a modernised Görlitz90 or whatever coach and so it's like a proper UIC-Z coach now, and 174A is a modernised 111A coach but with better bogies so it pretty much came down to which seat looks better
and so, since 170A is a UIC-Z coach (albeit limited to 160 km/h), it does have that advantage that it might have been used in higher category trains, and therefore seats might be better
and like
yeah it does look like that they are better than 174A but it's like, pretty much just small difference