It should be a decent set. I've always felt that Robert Shaw's M8 was a bit underrated. I think Levi's M2 was particularly good. Frederica von Stade is the soprano in M4 (and it's a good one). Levi's M6 is rather fast in the first movement and doesn't have an exposition repeat. However, the finale is particularly good. I very much liked the first four movements of his M7, but the finale was simply too slow for my thoughts on the work. Still, you could do a whole lot worse.