[Bum0]

Well I bought an IE8 a few years ago. But I've seemed to have lost it. Now I'm looking for a replacement. I do still have a Shure 535 set when I'd like a more flat response. So, I like the fit of the IE8s, they're comfortable, light, and has a very flexible cord which is good since I take them to the gym. And I like the bass response altho slightly more punchy would be nice. Mid range is good enough and highs are kind of sparkly which I like. I will usually listen to rap, modern hard & classic rock with these IEMs.
I could get another IE8 set but looking for something new to have. Any suggestions I should look up that could be a slight upgrade? Different brands within the $250-450?
(Using primarily an iPhone 6+)
Thanks for the help!