I've been using the Creative EP-630 for years and since I'm not a hi-fi expert, I was pretty satisfied with the sound they produced and to be honest, they are just the greatest bang-for-buck IEMs. Now that I have a bit more money to spend I want to upgrade my IEMs. I listen primairly to Dubstep, DnB, Reggae and sometimes a bit of House/Psytrance. Prettty much bass-heavy genres. I know there is a significant difference between bass quality and bass quantity, but I was already happy with the ''quality'' the EP-630s offer, and even though I would like to experience better quality, I'm leaning more towards quantity. I would like those in-ears to litterally shake my head haha. My budget is around 50 euros but I can stretch if the price is justified I've done some research and I came up with these in-ears: -Hippo Boom -Hippo VB -Brainwavz M2 -Monster Turbines From my understanding, all of these offer great sound at the lower frequencies but what I really want is for them to offer more bass than my EP-630. Brainwavz M2 for example offer really good bass from what I've read, but not necessarily more. I'm not familiar with these IEMs but if you have any advice or maybe experience than I would be very glad to know.