Pros: Huge bass.
Cons: Somewhat muddy. CKS-77x better, without sacrifice of bass.
Waited a while to write this, wanted to give them some burn in time. Thoughts haven't changed though.
Just wanted to let people know this does not have the best clarity. Don't get me wrong, it's very good, and I think worth the money. The bass is HUGE (provided you get a good seal), with minimal sacrifice of other freqs; I get a little nauseous if I turn it up on something too bass heavy (and I love/need bass).
However, there is definitely noticeable lack of clarity in highs and mids. AKA: sounds a little muddy. Again, good sounds, and wide range--not cheap crap (I honestly dont understand people comparing these to crappy JVC HAFs and the likes).
I write this coming from the AT CKS-77x, which has more bass than you need as well, but has much better clarity in the highs and doesn't sacrifice bass. You can definitely FEEL the power of the larger drivers in the Sony and the amount of air it moves, but that's really about it. The CKS-77x definitely has crisper sounds, and without the sacrifice of bass. Check them out.
On the other hand, these are hands down the bassiest <100$ IEMs Ive tried. Large but comfy, moves lots of air, good range, could be clearer. Can't go wrong with them if you're looking for bass.