My first pair of good headphones were Sennheiser HD424s back in the early 1980's. My most recent pair is the larger Sennheiser Momentum. I've listened to them all over the years. The Sennheiser line always place consistently strongly, at most any price point. Audio Technica as well. I have always wanted to like AKGs, and they can be very good, but I have had many poor auditions of those over the years. My sampling of STAX phones is much smaller, but that is the other long time gold standard line I know of, though marketing of these to US has changed considerably over the years. Hard to find in the US to audition these days.
I've listened to a lot of phones in last few years and have heard most of the leading contenders. Lots of useful headphone reviews availble to sort through. You'll find many well liked ones and little agreement on what is best. There are some nice newer lines out there as well, but I have not heard anything there that clearly knocks out the long term leaders. Just more good stuff to sort through and choose from.
I am NOT a Beats fan. Stay away from trendy new lines for the most part, but some are still quite nice.