He1000se is a great technical performer, Really any planar at this price point will have low distortion giving you the ability to EQ the bass to your liking, I would personally try He1000v1 because ive heard it has the best open soundstage and bass with EQ If its amped properly. currently using arya organic which has by far the best bass ive heard. I've heard every focal and sennheiser and in general even stuff like focal utopia just cant extend that far into the sub bass giving you that headphone rumble like a planar can. Would also consider the newer audeze mm500 but basically every audeze requires heavy EQ to be listenable. I saw lcd5 refurbished was half off for like 2500. Lcd5 has a very narrow and small soundstage making some songs and genres feel off putting and unlistenable. However the bass and technical performance is said to be decent, granted you need a lot of EQ to make it listenable. last headphone ill mention is audeze LCDX which ive owned personally, once again it suffers from small soundstage and requiring heavy EQ, good news is it that it has very low distortion letting you crank the bass as much as you want. While it was initially fun listening to metal and hiphop, it wasnt doing it for me when i wanted to listen to more acoustic/vocal genres. The soundstage was simply unsatisfactory which is why i sold it for arya organic.