You’ll love the ERM. It’s a powerful piece of kit. Using your DAW as the master clock and sending the audio pulse to the ERM is bomber tight. Being able to shift all 4 channels forward or backward is nice too (assuming you keep it on the default POS/NEG mode).
I just learned about Freewheel mode in it as well. It immediately flips to its internal clock should the audio stream crash. Great for when your computer shit’s the bed.
Also, if you have any modular, you can make or buy the modular whips from ERM that let you use any of the 5-pin outputs as clock sources with a reset.
You can also stop and start channels on bar and in time which is also really nice.
Seriously awesome piece of kit and I’d never sell it.