does Queen have better sound quality CD?

I have the original Queen 2 release and then bought the Box Set called "The Crown Jewels" and the Queen 2 in that set is far superior sounding then the original release.They all sound fantastic.I was an early fan of them from the first album and then i thought Queen 2 was a masterpiece.Kind of slid down hill for me after that but i thought i would pick this up and give some of these discs i have never heard a listen.Think there are like 6 or so discs in the set.What i do know is the first album and the second album sound much better in this remastered "Crown Jewels" box set.If you are a fan i would investigate this set for better sound quality.Probably the later albums already had very good sound but not really sure.