I have a few of the LPs from the first box set but haven't listened to them yet. If i'm reading between the lines these 'new' releases are from digital files created for the '90s RBCD release? that would mean these vinyl box sets are digitally sourced. I never cared for '90s RBCD releases that Wilma oversaw, they suffered from the same distortion I heard on the original vinyl pressings.
The speakers corners releases were excellent across the board and ended my desire to collect original pressings again, they covered most of the TAS list records. Hobson only did the sonic block busters like hi fi a la espanola, love for three oranges, rapsodie espagnole/la valse, the firebird and a few others.