If by "regular" you mean the aluminum versions, I think faux is the answer for a number of reasons, with the number one being NOI. The 400 sets are likely coming from capital improvement budget, which may not hit NOI, going forward, I believe you will have fewer replacements, saves both time and cost to replace. If you want to go deep let me know and I can put you in touch with a person I cycle with that is a national VP for Hunter Douglas, they probably have studies etc.