Count me as another vote for the Bosch 12v line.
I have bought Makita cordless power tools almost exclusively for 2+ decades. When I moved a couple years back, I decided to go "airless" at my new home and rely exclusively on brushless power tools since "big power" 1/2 in impact wrenches were being introduced by all of the big players. In retrospect it was a great decision, at least for me. I couldn't be happier with my Makita XWT08Z.
When it came time to decide on a 12v platform for ultra lightweight tools, I borrowed Milwaukee, Makita, and Bosch examples from my friends (I have accrued a significant surplus of tool borrowing good will over the years) for extended test runs, and for my needs the Bosh 12v was the hands down winner.
Bosh's 12v tools have a substantial advantage with respect to size, weight, and ergonomics. It appeared to me that Bosch is down on power compared to Milwaukee and Makita, but I have finally reached a stage of maturity (perhaps much later than expected) where I can admit to myself that power is not everything. This is especially true for tools that I am purchasing for the explicit reason of being small and lightweight.
I decided to purchase a Bosch 12v impact wrench (had to buy it from a Euro retailer), impact driver and cordless screwdriver, and I have not once questioned my decision. I am also certain that I use my Bosch 12v tools much more often than I would have used similar offerings from Makita or Milwaukee. For me, frequency of use is the best endorsement I can give a tool.