Sadly we can’t compare all the models, but the two highest quality TWS earphones we have used so far are the Lypertek Z7 (very responsive to EQ which is great) or the Noble Fokus Pro which again you could EQ quite easily to your sound preference. However using the Shure or Fiio TWS MMCX adapters with your current Solaris would be another potential route to check out, whilst it won’t be quite as good as wired at least you’d still have that Solaris sound.