Orpheks only have 2 diodes per lens, unless they did something different? Which means, they just caught up to the old Quanta Pro's. Also, the blending with the Quanta Helix compared to the Orphek's is way better. The Meso Blue only has two sequences running the length of the bar and I think the Orphek Blue Plus has 4 or 6, so you have to mount them high in order to achieve any blending.
I'm not sure why anyone would get Orphek's over Quanta Helix, unless you're already invested into the Orhpek ecosystem?
When I first got the Meso Blue Pro's, I compared them to OR2's and XHO's combined and two 3' Meso Blue's put out more par than three 2' OR's and two 3' XHO's together.