Sound Quality of New Blue Note Jazz LP Reissues

I'm a big Blue Note fan and have lately purchassed a number of the reasonably priced reissues that are available in sealed condition by mail order. These include Bobby Hutcherson't Dialogue, Jackie Mclean's Action, Joe Henderson's Inner Urge, Sonny Clark's Cool Struttin and Hank Mobley's Soul Station. While I'm glad that these can be purchased for about $10.00 new, I find that the sound qulaity of some of them, especially Dialogue, is lacking. In fact, Dialogue sounds alot like the earlier, infamous DMM version which I bought it to replace. Has anyone formulated a judgment about these from the perspective of sound? Do you know who is involved putting out these new reissues? Is it Blue Note itself or a licensee? Thanks