So let's assume one batch is named LME49720, another is LME49860 and the third one say LM4562. I recommend the LME49860 batch. You can also say there is no difference between Siemens and Tesla because it's always E88CC just from another factory.
After some more experiments with upgrading my headphone amp and its PSU I find again the AD797BRZ to be the best, in terms of overall transparency.
I sold the Earth so I cannot say how it helps but my Sun v2 improved when I removed the capacitor upgrade. The ones I use in my DAC are better and those from Evox just were making the sound worse. So, I strongly recommend to anybody removing the cap upgrade or placing there some decent electrolytics, i.e. Black Gate STD.
able to test ad743? my last impression of this opamp is it does better then ad797A version. not that sure how it fares when compared to ad797B...