Experience with the Use of Wider-spacer SWRO Elements

Hello, as we know most RO membrane suppliers now offer wider spacer (34-mil) RO elements which are supposed to result in less membrane fouling than the traditional RO elements with 28-mil spacers . Myqueryis what is your experience with wider-spacer SWRO elements ? Do you see any improvements in terms of reduced membrane fouling? would like to get group members views on this,,