Quantum audio is a great choice for PC gamers looking for spatial sound and an easy-to-use gaming headset. With a competitive price point, you get a comfortable headphone that handles music really well and has a good microphone. However, if you want a headset with more features like Bluetooth and custom LEDs then something like the SteelSeries Arctis 7P or HyperX Cloud II Wireless might be a better fit.
While not quite as comprehensive as a mixer built into an audio interface, PreSonus's UC software does make it very simple to set and use the Quantum. There's a real-time spectrum analyser that can inspect any pair of input and output signals, and the digitally controlled X-MAX mic preamps can be bypassed by plugging in line level signals via combi XLR-jack sockets: this allows you to audition different microphones and line sources without having to tab back and forth between your DAW and the audio interface control panel.
Another nice feature is the ability to store the Quantum's own preamp settings as MIDI Continuous Controller messages, so you can use them with your DAW projects. This is a feature that other manufacturers don't offer, and it helps to keep the interface's controls clean and uncluttered.
One of the biggest complaints I've had with many USB and Thunderbolt audio interfaces is that they add a complicated mixer within their own controls, which can often result in you needing to constantly tab between your DAW and the mixer control window just to change a setting. The Quantum doesn't have that problem, and its UC utility mostly just mirrors the features that can also be configured on the device's front panel.