> I just noticed from Acube's site that the Sam 440EP is out of production.

Sam440ep-flex still available at 667 and 733 MHz from ACube:

https://acube-systemsbiz.serversicuro.it/shop/en/5-sam-motherboards

I don't know if those are just remaining stock, though.

> It would be a good alternative to Pegasos 2

Performance-wise, the Pegasos 2 wipes the floor even with the fastest Sam440.