CMX 3600 EDls dont hold dynamic speed ramps, only static speed changes and those should work on every system.
In those cases where footage is speed up we tend to make single frame cuts , those will work fine too.
But if quality is king, you want a good offline, timecode and Red name visually embedded and use Kronos/speedo/twixtor.
I tend to ask for non-speeded and speeded EDLs and always look forward to what the clients deliver 😉