I noticed that some posters mentioned the cost and added labor of crimp terminals as prohibitive.
Just wanted to clarify that 3M and others make very affordable, high quality, non-insulated fork and ring terminals for 12 to 10-gauge wire. These are what I like to use, since there is usually no need for the expensive insulated crimp terminals in this situation. The non-insulated terminals also take up less room and make it easier to set the devices with a box that’s less than 2-1/8" deep.
Stripping and crimping can be done with the same pliers, so I feel that single pigtail installation is as fast or faster than traditional strip, counter twist, form loop, tighten, trim excess, and the connection quality should be more consistent when there are several installers with different skill levels and connection techniques working on the same job.
If you will also be doing future service work at the facility, and need to replace worn devices, I would think that the minimal initial added expense of these terminals will be offset through the savings of time necessary to repeat the above process over again for each connection on every device.
JMHO