That original Orion DC-DC was always a really weird outlier in the victron range with its poor efficiency leading to very high temperatures. It does seem as though this one is "the fix" though as they're quoting an efficiency of 98% which is miles better than the original, and in the region of competitors.
Does it support reverse trickle charging to keep the starter topped up from excess solar/EHU though? This is a fantastic feature in my opinion so if it doesn't offer that, I'd still buy something else that does.
EDIT - That price is a bit nuts though compared to the competition. You're paying an awful lot for a blue box and app ecosystem there!