dan ny escarpment
Bronze Member
Have been happy with x500 after about 1.5 seasons maybe 40 hours. Biggest advantage over x300 it replaced, is a servicable x72 transmission. I mow about 2 .5 acres of hilly land with 10% grade front to back, and will replace the trans fluid sooner than recommended. The x300 slowed down over time as reported here and elsewhere the lower model unservicable tranny on that one did not tolerate the hills well.