No commentary series has volumes of equal quality, though some sets seem to have volumes of fairly consistently high quality. BECNT seems to be one such set so far.

In general it is possible to judge a set as generally conservative or not. The Anchor Bible is not a conservative set, but the commentary on Obadiah by Raabe seems to have been written by a conservative. On the other hand, NICOT tends to be evangelical, but Leslie Allen’s contribution on Joel, Obadiah, and Jonah trends in the critical direction.

It seems as if, though you’re writing a review of the series, you would still argue for individual purchases, rather than a series on the whole. My question is this, does the fact that a commentary is in a series really tell you anything about its quality or conservative viewpoint?