Just got Sony ex800st, there r great and that is coming from someone who uses at-im02 and fidue a83.
The ex800 are very mid forward but retains the treble details n bass. This is especially so if they are deeply inserted in the ear. The details rivals the at-im02 when deep insertion is used. It is not as peaky as the fidue a83 but the bass is superb. Cannot wait till the drivers burn in. Will update later.
Try putting a ex1000 cable on it, you will get a stronger bass.