I'm afraid I don't own them anymore so can't really say. I just remember the Super.Fi's were too lively for me. At the time I opted for the SE310's over the SF5 Pro's as I felt the latter could be too overbearing or slightly too busy. I don't get the same issue with the SE535's which whilst brighter than the W4's, do not have an issue with detailing or instrumental separation which I felt the SF5 Pro's at times did.
On a side note, forgot to mention, interestingly enough, the W4's actually have slightly more of a veil than the SE535's. They actually sound warmer overall and not quite as clear in terms of veiling.
Edited by Naim.F.C - 7/4/11 at 7:23pm