Shure SE215 vs Sennheiser GAME ONE PC Gaming Headset

Bass is emphasized so there is a good bit of thump while staying controlled. Mids are rich, highs avoid sibilance, though they're a bit rolled off.
Soundstage is okay--instruments are separated out enough for them to not sound like they're all coming from the same place, but it's not particularly wide.

The memory foam eartips mold to your ear to provide amazing sound isolation, though there's a bit of a learning curve to using them. You have to press them together before putting them in and then allow them to expand in your ear. Once expanded they will take the shape of your ear and that way provide excellent noise isolation.

The earphones also come with silicon tips which are easier to use than the foam ones and also last longer.

The SE215 earphones have a negative profile, optimized nozzle angle, over-ear fit and memory eartips that ensure the earphones stay in place comfortably regardless of situation. You can even lie on your side with them.

6 types of plugs (silicon/ foam: S/M/L).

SE215 earbuds use tough plastic earpiece shells, have a robust kevlar-reinforced cable, a sturdy Y-splitter that's difficult to bend and an L-shaped plug that adds additional strain relief. They won't break if you snag them, drop them or sit on them. They're also completely sweat proof so you can use them while working out without having to worry about damaging them. They're durable enough for professional stage use for which they were specifically designed for.

The SE215's 6.4-ft. cable is very thick, and further reinforced at the left/right split point. Reviews confirm the durability benefits of its heavy-duty design. If it ever does break, the cable is built to detach safely from the earpieces, allowing replacement.

The optimized angle of the earbuds, over-ear fit, and memory ear tips ensure that the earphones stay in place comfortably regardless of situation. These are also sweat-proof, so they're a great option for active use.

Shure provides a warranty against defects in materials or manufacturing for two years.

You get a lot of quality for the price you pay. Sennheiser is by far the best.

The microphone ranks among the best and features excellent noise canceling which does a great job at eliminating background noises.

The open back design gives a feeling of width to the sound, which is great for movies and games. This effect is achieved without having to rely on virtual surround sound software techniques.

The GAME ONE has excellent sound quality and offers good balance between the different sound frequencies. The bass is tight and punchy instead of the overpowering and bloated low-end that most gaming headsets have.
Mids have good presence and fullness, so game dialogue should be easily heard. The highs are crisp and airy so a lot of detail can be enjoyed from games, yet the headset is not fatiguing to listen to, even with long gaming sessions.

Inside the ear pads, reasonably thick memory foam is used so they feel really soft. On the surface is high quality velour which not only feels really smooth but also allows for some airflow to the ears, minimizing heat build-up.