Looking for Microphone + Headphone for gaming, recording videos and music. (150-200€ budget)

[EternalDream]

Hello everyone, I'm quite new to audio equipment in general, so I'm honestly at a loss for what headphones and microphone I should get.

I want to record games, as well as listen to music, without too much loss on either end. I do not want a headset, the microphones on those generally don't do it for me in terms of quality.

I've looked around a bit already, and I've considered a Blue Snowball mic (the Yeti is a bit too big in my opinion, so that one's out), although as I mentioned, I have no idea if that's considered good quality or not.
In terms of headphones, perhaps Sennheiser is a good option, though again, no clue what model I'd want. I'd prefer closed (I don't want my audio leaking out too much).

I don't think I can get a dedicated sound card, considering I only have a laptop (don't quite have the money for a decent desktop), but do correct me if I'm wrong.

Feel free to suggest items that go above my budget. I'll consider them just as well if they're great quality.

 

[Tinkmaster Overspark]

i think sennheiser HD 595 or 598 was an option that was reccomended to me in the past for that kind of budget and closed. i hope that helps. maybe a mod mic to go with them or the blue snowball

 

[WillMatthews]

I posted elsewhere with an identical question but haven't received any responses. I like the the Blue Yeti Pro and the Sennheiser HD 598's. I've got two questions regarding those Sennheisers though:

Does using the plug converter degrade the sound quality?

Being open backed, would I have to worry about the microphone picking up the sound from my headphones? I am not at all familiar with open backed headphones.