It all depends on what you're looking for. Some people prefer the sound profile of the Beats, and that's fine, I just think they are overpriced. I was into headphones for a while and I have:
Denon AHD2000 - Use it at my desk when I want something that hits and provides some isolation. I even have a headphone amp to decode and process audio and provide more power. Not cheap, but so worth it.
Grado SR80 - These are open air so they leak tons of sound, I use them at work on low volume since I want to hear what's going on around me but they are great for anything where bass isn't the priority like rock, classical, etc. I use them pretty much for anything with live instruments.
Koss PortaPros - On the go, I love these, especially for the price. They are dynamic and make listening to music fun. They suck on crowded transport though because they leak sound which means they also let sound in, kind of annoying on the train and you end up blasting the music to make up for all the background noise. Not good for your ears.
Klipsch Image S4 - In-Ear phones that I picked up a few years ago and they have never let me down. Some people hate these type of headphones because they don't like anything in their ears, but the isolation is great and they sound spectacular. Affordable too, always on some sort of sale.
