Finally bit the bullet and paid for the upgrade to V5, currently wishing I hadn't:
- No warning that you need to completely uninstall V4 first, so I now have a no working audio and have to try and find some way of re-installing V4 so I can uninstall it?!
- Shocking manuals. I mean really, way to put off any new prospective users...
- When I open V4 projects in V5, I get repeatedly asked for license keys. It doesn't tell me what device it's asking for, but I get about 5 of the dialogs in a row.
- When the project finally does open, it looks like several standard devices (mixers from the default stuff, iirc) and wiring are missing. No dialog telling me what is missing and why. Nice

Oh well, at this rate, I'll be expecting to see SonicCore go bust some time soon...
Chris