If you are not married to Milwaukee, then this kit for $199 is good and it shouldn't have trouble getting the crank bolt off with Lisle socket:
The Ridgid High torque has 1500lb/ft AND if you register your purchase on their website, you get lifetime service agreement (warranty) INCLUDING battery. Now, this particular battery will NOT give you full 1500lb/ft, but CLOSE - still 1400+. If you have Octane battery, then it should give you the "full power".
My understanding is that Ridgid will be discontinuing this model in favor of lighter duty one since this one was eating into Milwaukee high torque sales (same parent company).
Hopefully, since I already have couple of high power Octane battery, they will have firesale on these without battery when they discontinue it.

RIDGID 18V Brushless Cordless 1/2 in. High Torque 6-Mode Impact Wrench Kit with 4.0 Ah Battery and Charger R86211KN - The Home Depot
RIDGID introduces the 18V Brushless 1/2 in. High Torque 6-Mode Impact Wrench Kit with 4.0 Ah Battery and Charger. This High Torque Impact Wrench has 6-modes, including 3 auto tightening modes, that help
www.homedepot.com
The Ridgid High torque has 1500lb/ft AND if you register your purchase on their website, you get lifetime service agreement (warranty) INCLUDING battery. Now, this particular battery will NOT give you full 1500lb/ft, but CLOSE - still 1400+. If you have Octane battery, then it should give you the "full power".
My understanding is that Ridgid will be discontinuing this model in favor of lighter duty one since this one was eating into Milwaukee high torque sales (same parent company).
Hopefully, since I already have couple of high power Octane battery, they will have firesale on these without battery when they discontinue it.