I usually defer to KevinC on stuff like this, but I really like moly rings. I'm not driving in a quarry, and I use good air filters. I realize that I'm sacrificing some engine life, but I drive maybe 98% pavement, and the rest dirt, usually not following a dust cloud maker. I don't think I lose enough engine life to make chrome preferable over moly.

Make sure you home according to the ring material used. Different materials use different honing pattern specs.

From a mfr of hones:
Cylinder Ring Type:
OEM Iron rings: 180 or 240 grit
Chrome rings: 240 or 320 grit
Moly Rings: 320 or 400 grit
Plasma Rings: 320 or 400 grit
not sure ring type: 240 grit

Not responsible for advice not taken...