I have a Bobcat model 30, hex, with 9" rock auger. Had it 5 years. NO complaints. I run it on high flow and it is much faster than regular flow which is slow. Only stalled it a few times in rock. Broke it once but it was only $300 to repair. Bought it after breaking (repeatedly) a BelTec skidsteer auger. Will break teeth off of a dirt auger if it gets hung up due to torque. For money, its a good investment.