We report the properties of one-dimensional heteroepitaxial all-garnet magneto-optical photonic crystals (MOPCs) composed of alternating quarter-wavelength layers of diamagnetic ${\mathrm{Sm}}_3{\mathrm{Ga}}_5{\mathrm{O}}_{12}$ and MO-active ${\mathrm{Bi}}_{2.97}{\mathrm{Er}}_{0.03}{\mathrm{Al}}_{0.5}{\mathrm{Ga}}_{0.5}{\mathrm{O}}_{12}$ garnets rf-magnetron sputtered on ${\mathrm{Gd}}_3{\mathrm{Ga}}_5{\mathrm{O}}_{12}(111)$ substrate. Substitution of ferric ions by aluminum and gallium improved transparency and induced perpendicular anisotropy in pure bismuth iron garnet. As a result, photonic crystals owned a record high magneto-optical quality and a latching-type (magnetic remnant) Faraday rotation (FR). At the resonance wavelengths $775(640)\mathrm{nm}$ , a specific FR ${\theta }_F=-14.1(14.8)\mathrm{deg}/\mathrm{\mu m}$ and MO-quality factor $Q=99.3(46.2)\mathrm{deg}$ represent the highest MOPC performance achieved so far.