Hey man~
I've owned numerous IEMs from the more mainstream brands - Westone, UE, Shure, Sennheisers.
I started off with Shures - SE115 then went into UE - Triple fis then stumbled onto Westone with their W3s W4s Um3x and played around with the Senn IE8s for awhile and I own a pair of the SE 535s as well.
If you were to compare SE535 with the Westone 4s I personally would say its down to preference since the Mids of the Shures are more forward and full whilst the W4s are more subtle and tamed.























