Most satisfying system change in 2017?

Many upgrades from September 2017 to the Present:

System 1:  Replaced GE Triton 1 speakers with GE Triton References speakers, Replaced Rogue RP-5 preamp with McIntosh C2500 tube preamp, Replaced Magnum Dynalab MD100 FM Tuner with McIntosh MR88 Tuner, Replaced Conrad Johnson MF2550 amp with a McIntosh MC152 amp.  Replaced old audio rack with new Solid Steel 6 shelf rack.

System2:  Replaced Parasound Halo Integrated amp with McIntosh MA6600 integrated amp, replaced Cambridge Audio CXC CD Transport with McIntosh MCD301 SACD player, replaced Magnum Dynalab MD90 Tuner with McIntosh MR85 tuner, replaced GE Triton 2 speakers with GE Triton 1 speakers, replaced Pangea audio rack with a Solid Steel 5 shelf rack, Added platform for integrated amp.

I think I'm done and broke now.

• VAC 30/30 MKIII Signature (VAC converted my 30/70 monoblocks into two stereo amps... so I've kept one and will sell the 2nd one)
• Music Reference RM9 MKII