Oh i never checked them since they gave no stats in the old days, just the speed differed, on live i probably got some because it was looking nice ... Btw shard of hate mount was so ugly that almost nobody wanted it.
Got a disk with 1% reuse, 2% crit and 200hp/power, it cost 800K status and 40pp. There are 3 different models with one with reuse, one with casting speed the last one was probably a dps bonus (haste, dpsmod, ...)