What is the best alarm for e-bikes that you've tested?

[AREM]

First of all, I hope you're well and adjusting to this new 'normal', and let's hope to God this will never become normal.
I saw your reviews on the Boomerang and then checked them out on the internet and their website. Perhaps you have better access to information about them than the rest of us.
Thanks for any updates you can provide us.
Alfy