Which type of mic is better to use, USB or XLR?

Answer 1

The is no 'One Mike' that is better than another microphone. Every mic is dependent on the situation and the end user to produce the sound required.

We can tell you that USB mics are much cheaper and easier to use than traditional microphones, and that is always a better option when you are trying to stay on budget.

The best thing to do regarding microphones is to do a lot of research before you buy one. Read reviews and feedback online, check multiple sources and solicit opinions from others in your field. You'll find your ideal microphone soon enough if you do that.

Answer 2

With a USB mic, if you don't like the sound of the mic, you're stuck with it unless you buy another USB mic.  My preference is to get a good mic preamp with a built-in or external USB adapter and get an XLR mic. You can use different mics with it and you don't have to be concerned about the quality of the preamp and USB adapter built in to the USB mic.  You can also use a lot longer mic cable if you need to record in a closet where there is not room for a computer speakers, etc.