I’ve never used a Sound Blaster X-Fi Go!, but from the description it looks like it is primarily designed for 3D playback (great for games and videos), so I would not expect the recording quality to be great (though probably better than the built-in laptop sound card).
The main disadvantages of USB microphones are:
- It’s an all in one solution, so you can’t just upgrade the microphone part and keep the same USB part.
- Unless it has a headphone socket built into the microphone, monitoring your recording will be slightly delayed, so listening to yourself through headphones while you record will sound like an echo (this does not affect the recording and many users are happy to record without their voice in the headphones, but if you want your voice in the headphones while you record, the delay will be very off-putting.
- You can only use Audacity with one USB microphone at a time - you can’t add a second USB microphone at a later date.
The main advantage of a USB microphone is that you can get very good recording quality at a relatively low price.
Have a look at this topic: https://forum.audacityteam.org/t/need-help-getting-mic-etc-for-voice-recording/19172/1