Update README.md

README.md

@@ -46,18 +46,20 @@ tiny/
 
 ## Available Formats
 
+**Q5_0** is the "last good" option. Lower quantizations (Q4, Q3, Q2) lead to a sharp loss of quality and meaningless output.
+
 | Format |  Quality | Use Case |
 |--------| ---------|----------|
 | q2_k |   Smallest | Extreme compression |
 | q3_k |  Small | Mobile devices |
-| q4_0 |  Good | Legacy compatibility |
-| q4_k |  Good | **Recommended for production** |
-| q4_1 | Good+ | Legacy with bias |
-| q5_0 |  Very Good | Legacy compatibility |
-| q5_k |  Very Good | High quality |
-| q5_1 |  Very Good+ | Legacy with bias |
+| q4_0 |   Small | Legacy compatibility |
+| q4_k |   Small | - |
+| q4_1 |  Small | Legacy with bias |
+| q5_0 |  Good | Legacy compatibility |
+| q5_k |  Good | Good quality |
+| q5_1 |  Very Good | Legacy with bias |
 | q6_k |   Excellent | Near-lossless |
-| q8_0 |   Excellent | Minimal loss, benchmarking |
+| q8_0 |   Excellent | **Recommended for production** Minimal loss, benchmarking |
 
 ## Usage