I voted for Forever, Michael. Got To Be There is Michael's best ever solo song as Motown artist, but as far as his Motown albums go Forever, Michael has a lot of good songs on the and hardly any fillers like Got To Be There and Music & Me have.
We're Almost There, Take Me Back, One Day In Your Life, Just a Little Bit of You, Dapper Dan and Dear Michael are all brilliant songs from the Forever, Michael album, and no other Michael Jackson Motown album contains that many brilliant songs. The other songs I haven't mentioned are also great songs.
I love the Got To Be There album, but Music & Me is quite a patchy album even through it does contain some brilliant songs like Happy (Theme tune from Lady Sings the Blues, a Diana Ross movie) and the classic song Music & Me.