All great replies. I have learned a great deal from everyone on this issue.
This is hopefully good knowledge for shoppers, becasue these issues are best known so we can work around them as best we know how to meet our own taping objectives. I think it is super cool that SD worked it out, and I do not blame the other companies for not working it out, their priorities are whatever they are. I don't think that makes them bad, but I do totally applaud the fixes that some manufacturers have worked out. Nice that we have some voice as a community.
I'll try and find some time to do more in depth testing this weekend. I wouldn't rule out my calling Mytek, but I'd be expecting at best to plant a seed, not much more. I am looking forward to comparing the differences between going Gefell>SD USBpre2>Mytek>MT2496 and Gefell>SD USBpre2>Tascam DR100MKII, as they can run simultaneously. I recorded a bunch of stuff, but have not had time to give a close listen as of yet.