The Threadgill stuff is more than fine, imo. And at < $9.00 per CD and remastered (hopefully well), it's a helluva deal. This and the upcoming Mosiac make it possible to, in two fell swoops, to learn and/or "catch up" with one of the major-yet-relatively-unheralded "jazz" figures of our time.
Of course, that's just my opinion, and if anybody disagrees, well then, go right on ahead, you have the right.
To be wrong.