I used a lot of mics over the few years I've used Utau, since 2010.
Ive gone from a 3.5mm Logitech desk mic, to a rockband mic, to a usb Logitech headset, to a Blue Snowball (when theu were $100+), then I went XLR to an AT2035 (same as AT2020), SE Electronics X1, CAD m179, and now I own three different mics such as the Shure SM7b, KAM MC3, and Blue Encore 100.
I also own a CAD u37 for testing purposes, and a CAD GLX2400 which I am sending to someone that is like best in it's price range.
The Blue Snowball and Logitech headset sounded almost the same, like I'm not even joking.
So if you can't afford anything then walk into Walmart or Bestbuy and buy a $20+ USB Logitech headset that is not a gaming headset.
If you can afford it then I suggest getting a GXL2400 usb.