I owned the W4's for about 2 years and just recently lost them sadly . Now, I'm on the search for a new set of IEM's in that similar price range. I found the W4's to be very pure but a bit boring. The sound was very balanced but I would prefer something more engaging and exciting this time around. I'm mainly listening to electronic music such as house and trance and music with a fast tempo with a heavy beat. I've read many reviews but would like some more specific advice. I've looked at the Shure SE535, Heir 4.Ai, Earsonic SM64 and SM3 v2, Sennheiser IE8, and other various models. I haven't had the opportunity to try any of them so I'm relying on the expertise of this community. I'd appreciate any advice or recommendations greatly. I tell myself that this is an opportunity to try something new as I was super upset to lose the W4's. Thanks again.