I you want a simple 2u ZFS Box these could be nice no rails or Ram unfortunately:
Supermicro CSE-825 2U X10SLM+-F Intel Xeon E3 v3 CPU LSI SAS9211-8i RAID Bundle | eBay
Supermicro CSE-825 2U X10SLM+-F Intel Xeon E3 v3 CPU LSI SAS9211-8i RAID Bundle | eBay