I also thought that moving to Win 7 x64 would mean the end of the line for my EMU-1616m. But the Beta Vista x64 drivers (2.30.00) work well in my case, to my pleasant surprise. I can confirm the following:
After almost 3 months of moderate use (ASIO mode), I'm not experiencing:
1] BSOD's while arming/disarming tracks or changing input sources
2] Silent outputs after rewind from record state
But I am experiencing the following:
1] 'Scribble Strip' track names (PatchMix DSP) are no longer appearing in the ASIO input names in Sonar
My needs are pretty straightforward and I will keep this interface until it dies on me. In the meantime, I'm saving up for when that time comes.