i have another post about oba/obaj, maybe you can comment on them also.
This has been disscused countless times on the PF. For the sake of clarity, I suggest to treat 'oboje
' as the basic form which applies to adult couples of both sexes, to couples of children and to the nouns without the plural form (skrzypce, drzwi, sanie etc.). Then, if you talk about men, you should think of the 'obaj' form (obaj żołnierze, obaj chłopcy); if you think about masculine nouns except men and neutral nouns, you should choose the form 'oba' (oba psy, oba słonie, oba biurka, oba pokoje, oba okna); if you talk about feminine nouns you should use 'obie' (obie panie, obie żyrafy, obie szafy).