I have the D1 and the D4, I just ordered the m1 and m3. The D1 is longggg, and has a predictable left turn, and is overstable but not meathooky. The D4 is great for slalom like turn over shots, as its easily turned over, and is extremely understable. Will update my thoughts on m1 and m3 once I have thrown them for awhile.
p.s. I threw 376 with a legacy cannon, and I beat that with the prodigy D1
M1 - Straight when ripped on but has a hard fade, its like a longer drone
M3 - wasp/roc with more glide (i hear they are re tooling this mold and making it the m2, new m3 will be released later)
M4 - Unlike anything I've ever thrown, glides forever, only thing that comes close in comparison is the lat. 64 opto fuse.