I'm just going to put it out there: this is the best $50 gaming headset I ever had the pleasure of trying out. Cougar did everything right - it's superbly comfortable, is built like a tank, and its sound is tuned for pure fun. That doesn't necessarily make it accurate or anywhere close to natural, but when you realize you're grinning like a madman while firing your favorite gun - something you never did before - you won't really care.
The microphone also exceeded my expectations, especially in terms of practicality. It's of a simple, retractable design that allows you to hide it inside the left ear cup with a single movement of your hand. It's by no means revolutionary, but works well, so why not use it? Performance-wise, it's quite loud and clear and doesn't pick up too much static noise from the motherboard, which is something many gaming headsets struggle with. It should serve you just fine for Twitch streaming too, although it lacks the dynamics and naturality needed for serious YouTube productions.
Hardcore gamers, those looking for every possible competitive edge they can get, will probably want to look for something that's going to offer them a bit more clarity in the midrange and even better spatial positioning, so they can have a better idea of the location of their virtual enemies.
Yes, it's a wonderful gaming headset for that price. However, perhaps even more importantly, I wouldn't hesitate to wholeheartedly recommend it even if it were ten or twenty bucks more expensive. It's one of those products that makes you wonder why we even need anything else in the same category since it does almost everything it's supposed to do so well.
If someone handed me the Immersa, allowed me try it out for a while, and asked me to guess its price, there's no way I'd land anywhere close to $50. When you manage to produce a peripheral that looks, feels, and performs like it comes from a higher price category than it actually does, you can be certain you did a great job.