There are many out there to choose from, but this one has been recommended very highly by Rupert Ziawinski, a really great Bass player and college music Professor at both Broward and Miami Dade College.

If all you will be recording is a microphone and/or one instrument at one time, this might be the solution for you. Take a look at the Samson G-Track Pro Professional USB Condenser Microphone with built in audio interface.

There's no XLR output, it's USB only, but in addition to a being a good quality, large diaphragm condenser microphone with switchable polar patterns, it's got a 1/4" instrument input for connecting guitars or other line level devices, a headphone jack (with level control), and it features a built in mixer so that you can adjust the levels between your voice and your instrument, and it can be switched from monaural output (microphone and instrument on the same channel), and 2 track output, (microphone and instrument on separate channels).

NOTE: You'll need a powered USB hub LIKE THIS ONE and an appropriate OTG adapter to use this microphone with a smart phone or tablet.

You might also want to consider investing an additional $30 (renewed for $20) in a Microphone Spider Shock Mount Mic Holder to isolate the microphone from your environment and mount it on a mic stand.