Hi out there , I am looking for a powerfull 1/2" impact wrench. Looking at some air cat impacts, 1100K and 1200K they claim they have over 1000 ft lbs of torque. Anybody have any of these impacts? Are they any good or should I buy a good IR instead? They can be had for under $200 But would have to spend close to $300 for a comparable IR. Thanks in advance for your comments.