I will "sing" the praise of the Apogee Mic+ .. $250 USD.
It is in a word.. Simple..
2 words .. Simple and Amazing Quality.
I have older model that is iPhone only. The newer
Mic+ comes with cables for Apple and Windows (usb cable).
It works perfect with free Garage band app (Iphone). I also use the iphone's camera to record video at same time. Using fee app called iRig recorder.
I had been trying for years to get good recordings with "other gear". The Apogee is so forgiving. Even in non treated rooms I get great Acoustic and vocals.
Worth a look!
http://www.apogeedigital.com/products/mic