I've been researching and buying online to figure out what I want. The KZ ZS7 clued me in that I'd want a DD/BA hybrid, but what a sibilant mess! The Fiio FH7 is loads of fun, and I love the low end, but the highs are meh. I bought the Solaris on the basis of the much hyped holographic soundstage, and in that regard, it does not disappoint. But, I do really miss the FH7's woofer. I would love a new hyper holographic CA hybrid with more low end oomph than the current Solaris.