I've finally listened to everything in the box now and as I always do, I grade them in itunes (you have 5 stars, 1 bring the worst) I'm afraid most of it is well under par and some a complete waste of vinyl, going by my score.
5 stars: suspicion, frank wilson, stormy
4 stars: temptations
3 stars: isleys, marvin
2 stars: ruffin, mcnair, spinners
1 star: stevie wonder, 4 tops
I've rarely heard such uninspiring Motown music as those last two.
Still, I know people will say that this chart is upside down.