[SimpleManWithSimpleTastes]

I am looking for a headphone at around $100 that I will use as a monitor to record my lectures. I will also use them to listen to classical music. I expect a decently smooth soundstage, or as much as this price point can get me. I do not have an amp, and I use ATR2100 in USB mode to record my lectures.
The following headphones are available here.

1. AKG K361 - $ 100
2. AKG K361 BT - $ 99
3. AKG K371 BT - $ 106
4. Sennheiser HD 280 PRO - $ 78
5. Shure SRH440 - $ 106
6. Beyerdynamic DT 240 Pro - $ 90

Which one should I get?

 

[silent-circuit]

The Senn HD 280 Pro, based on my experience.