Have to add that all things being equal the quality of the recording really can determine the level of transparency which equates to speakers disappearing. I have never heard Silverline described as "boxy" and would agree that sounds like a sales pitch.
Revel F208s, F52s or Nola Contenders?
Looking for under $6K speakers. Currently have Silverline Sonatina IIIs which sound very good, but have issues with disappearing. Room is 15 x 22 with 10 ft ceilings. System is Wyred 4 sound DAC2 DSD into Cary SLP98 F1 direct coupled to Manley Snappers. Au24 SE interconnects and speaker cables.