I use a q1202 usb, so I can plug it into my pc and record into my DAW, and a headphone amp on the main out of the board so multiple people can hear what's going on. Total cost $120, not bad sound quality and for me being able to pull it directly into my DAW is great.

Q1202USB https://www.amazon.com/gp/aw/d/B000KIPT30/ref=mp_s_a_1_1?ie=UTF8&qid=1492953727&sr=8-1&pi=AC_SX236_SY340_QL65&keywords=behringer+headphone+amp&dpPl=1&dpID=51nwD3v6KZL&ref=plSrch

Ha400 https://www.amazon.com/gp/aw/d/B008O517IW/ref=mp_s_a_1_1?ie=UTF8&qid=1492953634&sr=8-1&pi=AC_SX236_SY340_FMwebp_QL65&keywords=q1202+usb&dpPl=1&dpID=5153d6epzTL&ref=plSrch

Is your co-host local? If so

• Behringer Q1202 USB Mixer - $100 (Amazon)

• Behringer XM8500 X2 - $20ea (Amazon)

• Good XLR cables - I've been told you should be spending around $15 per cable, but buy what's your comfortable with.

If they aren't local? I know blue makes some higher tier USB mics.