Hello, I torment myself with audio stuff and think I might be able to help you pick a mic!
XLR is a balanced connection, meaning that it sends the signal twice (once inverted) and flips it on itself to cancel out interference. It's really useful for long cable runs and when you just want a really robust connection.
Going with an XLR mic and a separate interface will often give you more control over you selection. Where with usb you are stuck with what built into it you can get any interface and mic combo you want with xlr, also giving yourself upgrade/replacement space if something happens.
hmm....with USB mics the preamp and the mic are together in the same device...if you really think about it $80-$100 isn't a lot of money when it comes to getting anything audio related...
First off, what is your budget/price range?
Looking at the Shure PG27USB it seems like you can go around $200?
Being Shure it's going to be "decent", as a cheaper vocal mic it's going to be a tad bright but that can be EQ'd down with some finagling. Going to be a tad "undetailed". It's not exactly fantastic but it's not terrible either.
Note that you will want to get as far from your pc and sources of noise as possible and with the USB version you won't be able to do that (usb only really handles 6ft if you're lucky before the voltage drop causes issues).
If you want to go xlr you could do decent.
interface:
http://www.bhphotovideo.com/c/used/1102985/
I have this interface's older sibling, the UR22. It's a very well built and good interface. The drivers are fairly decent and it provides more gain that something like a scarlett solo for example.
mic:
http://www.bhphotovideo.com/c/produ...s_B1_B1_Large_Diaphragm_Studio_Condenser.html
A well priced, good sounding mic. Pretty natural and full sounding. Comes with a shockmount too.
additional stuff you would need:
cable:
http://www.bhphotovideo.com/c/product/866982-REG/Pearstone_pm_10_PM_Series_XLR_M.html
any reasonable xlr cable will do, as long as they work they will sound the same. You pay more for build quality and while this cable won't fall apart in your hand I wouldn't be too wreckless.
stand:
http://www.bhphotovideo.com/c/product/755879-REG/auray_ms_5230_tripod_microphone_stand.html
Just an example stand, I recommend a floor one but you can also get a desk one if you're so inclined.
That'd run you roughly a little over $200 which can be a lot for some people just doing utau as a hobby but if you can afford it then I strongly recommend it! IF you can afford a tiny bit more then I suggest getting
this stand instead...I was just trying to link the cheapest possible without linking to duct-tape and used rope lol. Same goes for
this cable if you want something your can violently strangle a man to death with and then still have it in good enough condition to still record with.
Side note: the AT2035 is an overpriced version of the AT2020 and the shockmount it comes with is really crappy. Generally the cheaper Audio Technica mics are grap and I would avoid them. The AT2020/AT2035 are not LDC and have a very muffled sound.