Personally, I would choose the G26, as it is the most-proven, over time, it points well, when I grip it, the absolute best “pinkie rest,” for my personal littlest finger, is a G19 magazine, though I have skinny fingers, and can live without a pinkie rest, for maximum concealment, and, finally, it can share spare G17 magazines, with my Glock G17 pistols. G19 magazine.
My personal Gen4 G26 worked 100% flawlessly. When I was winding-down my LE career, I sold it to a younger officer, who needed a back-up pistol. All small 9mm pistols hurt my aging right wrist, so, it seemed logical to pass my G26 to a younger-generation owner. Not long after retirement, I realized that it still made sense to have a G26, to shoot left-handed, as a back-up gun, if nothing else, so, when the supply crunch started easing, not long ago, I bought the first new Gen3 G26 to appear, at a local dealer, and later, when a really-well-preserved, pre-owned Gen4 G26 appeared, locally, I bought it, too.
A firearms trainer, who works for a federal LE entity, reported problems with the RSAs in the then-newly-marketed single-stack 9mm Glocks. I cannot say whether the problems have been remedied, but this information helps to tilt the balance, for my purposes, toward the G26.
A Shield EZ does NOT point well, in my hands, which immediately rules it out, for my usage. It is too late, in my life, to adopt any new weapon, that would require thousands of rounds of training ammo, at minimum, to attempt to re-train myself to adapt. Others’ experiences will vary.