I had a change of heart and cancelled the Lincoln order and bought the DW, mostly based on logistics: I have a lot of 18v DW stuff.
https://www.amazon.com/DEWALT-DCGG570B-18V-Cordless-Grease/dp/B00IYB0OIA/143-2478314-4062563?SubscriptionId=AKIAILSHYYTFIVPWUY6Q
I also, on a whim, bought this thing, called "LocknLube:
Sweet Baby Jesus what difference. I tend to use what I have until it breaks so the whole battery powered, LnL grease gun improvements have evaded me.
Tubes load like they should, no miss grabs, just a freaking pleasure to use. Expensive, I know...but it should last until I sell the place.