I've switched to the Xeen because of my budgetary concerns; they are fantastic but wide open they are terrible.
The 11 blades aperture are okay and there is a green tint on this lens and it seems throughout the line.
This lens is not a lightweight at all as none of the Xeen are light weight.
I cannot stand behind the durable question but I don't think they can stand up very long in rental house; as a personal set, they should last.
The question is would I buy this series again? No. I would wait and buy Schneider FF lenses.