Well I can tell you that the TF10 has much more bass impact than the W2 and if you thought the Super Fi 5 Pro had more bass then the TF10 you wont think the W2 has enough. Now the W3 has plenty but it sound about the same as the TF10's bass, both are get IEM's but the bass might not be to your liking.
What do you think of dynamic drivers because the EPH-100 might be a good choice also. It has very good bass with good impact and depth and is very full sounding. Detailed mids and highs and the highs a very non fatiguing along with a good soundstage. The GR07 and Atrio MG7 are also good dynamic driver IEM's as well.
I think the BA based IEM that would work for you might just be the Ortofon e-Q5. It has bass that sounds a lot like a dynamic driver with good impact and depth and the mids and highs are more BA like with very good clarity and detail. The soundstage is also very good as to the imaging and separation.
Those are my recommendations and gl on your search.