yes, it is all personal preference. if you don't like it, it is not your sound signature.
i preferred the er4s for instance except that i did wish for better comfort and a few other things. um2 also was a favourite and now my at ck10 are wonderful and i find them any bit as good as the e500 if not a different signature. fast and spacious rather than a bit more melodic and relaxed.
but, the truly different sound is when you can forgive yourself to spend less and get a dynammic based iem or canalphone. for instance, im not saying better but certainly a different sound sig is the atrio m5: less detail (as with all dynammics) but more tangible bass, more bass resolution and less roll off from any portable. also, not space but head stage is wider with the atrio and about any dynammic phone.
they are a bit darker sounding especially if you chose foam ear pieces
my personal fav dynam and iem are the atrio m5 and now the victor fx500 which do almost as good of bass as the atrio but due to the smaller driver, are a bit more intense. the driver moves very nice and drily: not too lush as i found the um2 and a bit the e500. highs are well defined but laid back but they are fast, very fast for dynammics but without a harsh echo of say the denon c700.
if you can pardon the greater size and fit issues with most dynammics, i think you can find that they will be quite a different animal and you may find yourself liking them better. price issues are mainly marketting and the armature itself costs more but price does not mean better sound. it however, induced placebo effect quite steeply