BH X-ray nova brighter than 3 Crab. (10 sources)

No.  Name                Crab    discovery    star-name
1． A 0620-00             50       1975/2      V616 Mon
2.  GS 2023+338           20       1989/3      V404 Cyg
3.  4U 1543-475           15       1971/4      IL Lupi
4.  SAX J1819.2-2525　　  13       1999/1      V4641 Sgr
5.  GS 2000+25            11       1988/1      QZ Vul
6.  XTE J1550-564          7       1998/5      V381 Nor
7.  MAXI J1535-571         5       2017/9
  -----------------
8.  GRO J1655-40          3.9      1994/2      V1033 Sco
9.  GRS 1915+105          3.7      1992/1      V1487 Aql
10. H 1705-250            3.6      1977/1      V2107 Oph
11. GS 1124-684            3       1991/1      GU Mus


Reference
McClintock 2006 Table 4.1. excluding Cyg X-1, LMC X-1, LMC X-3.

McClintock 2006 Table 4.3（BH candidates）
        4U 1630-47             2Crab        1969
was the brightest. The rests are below 1.3 Crab with RXTE/ASM (after 1995).

After McClintock 2006 (after 2002) 14 X-ray nova appeared.
        XTE J1817-330          2Crab        2006/1
was the brighest. The rests are below 0.5 Crab with RXTE/ASM.

The latest summary can be found in Corral-Santana (2017).