With the NOCO Genius Boost Plus GB40 1000 Amp jumper arriving today ($99 Amazon). Costco has a Winplus 8000mAh jump starter for $59 on the floor ($89 Amazon). It’s smaller and lighter and has the most important features (auto protect reverse polarity and overcharge).
In light of the answers I’ve gotten here regarding where to clamp the ground, I was surprised to see (on the company’s website) their answer to a QA. The company explicitly says to connect the black clamp to the battery - terminal.
I called the company’s support to make sure and asked. The fellow said absolutely you connect ‘our’ black clamp to the battery - terminal.