You can get some sigur ros and jonsi's solo official studio masters (hires) for around 10 bucks each.

Botching it on vinyl plastic and paying 40 to 60 bucks a pop doesn't look like a great idea a.k.a if you are not medium agnostic, you shall be denied the 'best recording'.

Looking to pick up some sigur ros vinyl

From his solo works...album - shiver

Track - Breathe

https://youtu.be/U44-xky1vjw?si=WYKXxG0JqY30jvva

From the 05 album, takk

https://youtu.be/qiFgfPiJHyA?si=L_HEf_luN2hW1pZ7

older ....

https://youtu.be/8L64BcCRDAE?si=LUr2_8wTINAh-3VG

should give you a feel for their music.

For those familiar with the band, could you send a recommended youtube that exemplifies their music, perhaps a favorite.