So far, I've been using ATH M40x, but the problem is my glasses make them uncomfortable, despite sounding amazing. Would it be possible to get earbuds that are just as good as those but under $50 USD? I briefly used earbuds with my phone once and couldn't even feel them.

Your best bet would be the BeyerDynamic DT 770 PRO.

There are many Youtubers who have no mic showing on their videos but sound very clear nonetheless. Obviously, you can't tell what mic they use.

I watch these podcasters with pro mics and I'm just appalled at their mic setups. It's as almost if they have to slobber over the mic in order to get a good sound. This is obviously ridiculous for normal use. Is there a budget mic that can cleanly pick up your voice from 1m away, so you never...

Shame they are leather. I've learned the hard way it is not possible for leather headphones to be comfortable.

After doing some research, I've come to the conclusion that BeyerDynamic DT 770 PRO 250 Ohm would best fit that titular description. In addition to comfort and price. However, since they were released some time ago, I was wondering if this still holds true?