I have a pair of AKG K240 MKII. They handle bass well enough IMHO, I fucking love them. However, I wouldn't consider them to be the type of headphone that makes it feel like you got a sub bass system in your ears. Might want to go with a "closed" design. Something like the Sennheiser HD-280 or Audio Technica M50. These AKG's that I have are a "Semi-Open" design, more suitable for mixing and comfort. I can wear these things for hours listening to music or making beats and they don't hurt my ears, light as fuck and sound good as fuck.
I don't know anything about those Dr. Dre Beats, but honestly, I probably wouldn't consider buying them. I'd rather go straight to a professional audio company. Monster is known for making cables.