Need advice from knowledgeable people on what to buy

I'm looking for over-head (full sized I think is the correct term) , closed-back, wireless headphones.

My budget is around 300-400$, I will be wearing them in public and indoors, mainly for casual gaming or listening to music. When I do wear them in public it's important that they don't leak much noise so that people sitting next to me don't know what i'm listening to.

I'm not a "basshead" or anything, I just want a good ol' balanced pair of headphones for everyday use, I do spend a good amount of time sitting on a desk so i'll probably have them for hours everyday which means comfortability is also an important factor I suppose.

Also for reference, I've been using the Steelseries arctis 3 (I know, kinda outdated lol) and i'm perfectly happy with them but they're getting worn out and I think it's time for a new pair So I thought i'd might aswell scan the market for something better.

Any help is greatly appreciated :)