Good heatsink for overclocking CM4?

I'm looking for a good heatsink to install onto a CM4 which I've got plugged into an Axzez Interceptor carrier board. Nothing crazy. I'm only looking to get to 2.1-2.3GHz.

I've recently switched from a fairly large passive heatsink to an active heatsink about the same size (https://www.amazon.com/dp/B0B4HCL62K). This switch allowed me to run at 2.0GHz and rsync without a bandwidth limit imposed and reduced the average temp from 56C to 50C (~40c at idle).

Are there better heatsinks available?

I'm aware of the CM1 (https://dickson.industries/products/cm1) used by Geerling in his Axzez build, though it is not in stock at the moment. :(