@fristi hi! I bought the Sony WH1000XM3 about 4 years ago and never regretted it. I needed to block out traffic noise and noisy neighbours.
They're comfy and the noise cancelling is just great - even unnerving the first time you put them on, that's how good it is.
They've been replaced by the WH1000XM4 and the WH1000XM5 since. You can find the WH1000XM4 for ~260. That's stretching the budget a bit, but the results are just great. You might find the WH1000XM3 somewhere for cheaper still?