Point of view
Anyone have really an objective criteria, many people try to have it (other not) but we all have an “objective subjectivity” vision of the music. So I don’t can recommend to you the albums that I like, especially if you don’t like the genre or you don’t understand the lyrics.
I don’t like the people who rate the albums with 0,5 or 1 without solid arguments or don’t like the style. Or rate 5 in all or the big part the discography of an artist.
I don’t use many the 0,5-2 points because I don’t want to see the names of this people in my music map.
As you can see in collection I have the big part of my albums in an external HD, the bigger reason is the space.

The Ratings
10 – Cum Laude. Personal favorites
9 - Excellent! Minus some details or moments near the top.
8 - Notable! Great album, with great moments, minor flaws.
7 - Good. More than half the record is good or better than average.
6 - Enjoyable. Some good tracks not really great, but have something I like.

5 - Medium. Not really interesting..
4 - Not Good. I really don't like it.
3 - Bad. Never return to listen it.
2 - Horrible. Probably you need a doctor after listen that
1 - WARNING! Danger of Death by massive garbage

The Collection
Vinyl or CD Albums I have still in this formats, also have them on Digital.
Digital Albums ripped by myself from CD to MP3 or buyed in an eShop.
Used to Own. Albums I listen and I want but I don’t buy them still.