Help Samsung Galaxy S5 models

[Avdryz]

Hello everybody,
Sorry for this question, but atm i'm highly confused.

Probably everybody know the new Samsung Galaxy S5 models:

Samsung SM-G900F for Europe
Samsung SM-G900I for Asia
Samsung SM-G900K/G900L/G900S for Korea
Samsung SM-G900M for Vodafone
Samsung SM-G900A for AT&T
Samsung SM-G900T for T-Mobile

Now i'm wondering what is the difference between SM-G900F and SM-G900K because all specifications are completely same.
I'm going to buy G900K. And now i'm asking you is there any possible "tricks" (malfunctions, low quality electronic, etc.) hiding under this code, because as i said before all specifications are completely same between G900K and European G900F.

Thnx

 

[LDrifta]

as far as i know all of them are equally made as far as specs, the differences you see in this case are most likely 'carrier' related, the G900T and the G900T1 are exactly the same device except one is T-Mobile and one is Metro PCS..