What my take is so far that output tubes don’t perform in the same way in Pac and GGs and this might be due to active anode loading in Pac among other things i guess (just my wild speculation)
The 242 at heihei with Pac and audionet gear is one of my favorite set ups. Haven't heard a source like that.
I am not an expert but clearly there are differences between various Lampi models. Another friend next door is operating GG1 balanced. In his case EML 45 Mesh Globe is absolutely amazing however 242 is not so impressive. In my case exactly opposite.
It is also a match with downstream components. The 242 is very finicky and doesn't work with many preamps.