replacing Diamant burrs

Toast

I'm considering both the Diamant 525 and the Grainmaker 116.  I see the Grainmaker's burrs [grinding plates] are guaranteed for life, while the Diamant's are just guaranteed for a year.  Does anyone have experience with how often the Diamant's burrs need to be replaced?

Also, does anyone know whether the quality of the Diamant is still what it used to be?  It says it was cast in Ukraine, and I'm wondering whether the situation there has affected the quality of the parts.

Thanks!