I mainly use an S-Booster LPSU but I recently bought a small Anker powerbank for general use that I sometimes pop in there to power the Pi.

The battery has an insight/noise floor edge but lacks some oomph compared to the S-Booster for some reason. I could live with either but generally use the S-Booster since it just sits there without hassle.

The Allo walwart that came with my DigiOne is a few steps behind either option for sure.