I just received my pair of the ROCKETS (Gold TiN + Black cables) earlier last week and just started listening to them this past weekend. For the most part, I agree with what many of you are saying from your first impressions about the missing sub-bass and highest treble of the ROCKETS. I have also personally been struggling with finding a proper fit and seal because of my smaller/more shallow ear canals, which may explain my perception of the treble and sub-bass.
However, I had an extra pair of Comply Foam Tx-500 tips lying around and decided to give them a try on my ROCKETS. The foam tips were able to fit over the ROCKETS and solved most of my issues with a proper fit and seal (and comfort!). Moreover, I felt that the Comply tips brought back some of the missing sub-bass. I've been playing around with this YouTube video: https://www.youtube.com/watch?v=BcyXE5xPbDk
Please let me know what you all think.