I have a budget around 300$. I would prefer closed back but comfort is key. I've been looking at the audio technica ath m50 but I have glasses so I don't know if they will be that comfortable. I like listening to classical/ rock/ pop music and I game sometimes as well. Also I was what the downside of iems are as I have also been looking at the sennheiser ie80s.
Finally, I want something with relatively low impedence as I don't want to buy a separate Dac/amp ( unless there is a relatively portable solution)
250 Ohm Beyerdynamic DT 770 Pros. Test them out first, if your computer has trouble powering them you can get something like a Schitt Magni or Mayflower/JDS Labs O2 amp for stationary or a Fiio E7. I know you said that you don't want an amp/DAC, but in my opinion having a good source is just as important if not more than a good set of headphones. Even the super elite bajillion dollar reference headphones will sound like crap if the source is crap.
Oh, and you might not need an amp/DAC at all with the 250 ohm 770 Pros, I have a set of 250 ohm 990 pros that run great off of everything I've used them with (iPod Nano, iPhone, desktop front panel, laptop, radio, etc.)
I owned the ATH-M50s for a year now and just bought replacement earcups. I bought these ones: Shure HPAEC840
I find the incredibly comfortable, no issues whatsoever. Its very subjective though, since a friend of mine said he did not like it. I generally recommend trying to find pads that are thick and soft. Like really darn soft, otherwise some bass is leaking due to the glasses. Generally speaking I'm very content with the Audio Technicas, since the isolation makes the usable in public transport and stuff.
I don't know how important mobility is to you, but since the ATH-M50 are monitoring headphones they are precise, which doesn't sound as good as hifi headphones for some styles of music. For the music you like regular open back headphones would be perfect sound wise. Not very good in a noisy environment, nor a place where sound leaking is a problem (a library for instance). Logan did a review on a different pair of Audio Technicas. You should check it out.
Yeah the V Moda are great for electronic music, but I don't think they work well with glasses. The pads are sort of firm, and pretty small, making it problematic when it comes to providing a seal on the ears.