I have about ten or fifteen of these fantasy jazz titles from Aoustic sounds (I assume that is what you are referring to)and they all sound incredible. Yes, they are very expensive...... try one and see what you think.
Superb reissues by Analogue Productions, you name the title... they are all wonderful. Tagyerit the only bad selection is the one you didnt get in this Fantasy 45rpm catalog IMHO. Buy the titles you love, then try to buy the rest. I signed up with Chad in the beginning to buy the whole numbered series. It is expensive, no doubt, yet I have not regretted getting one single album.