Not that SRS is the end-all be-all of ranking teams, but just for fun here are the top 10 Spurs teams of all-time by SRS:
2015-2016 Spurs: 67-15, +10.28 SRS
2025-2026 Spurs: 59-18 (62-63 win pace), +8.39 SRS
2006-2007 Spurs: 58-24, +8.35 SRS
2013-2014 Spurs: 62-20, +8.00 SRS
2000-2001 Spurs: 58-24, +7.92 SRS
2004-2005 Spurs: 59-23, +7.84 SRS
2003-2004 Spurs: 57-25, +7.51 SRS
2011-2012 Spurs: 50-16 (62 win pace in shortened season), +7.28 SRS
2016-2017 Spurs: 61-21, +7.13 SRS
1998-1999 Spurs: 37-13 (60-61 win pace in shortened season), +7.12 SRS
Not a bad group of teams to be lumped in (and almost at the top!) with. Four title teams, plus a few infamous heartbreak seasons where I'm sure most of us felt we were good enough to win it all (2016, 2004).