If its bassier headphones that you’re looking for, you definitely can’t go wrong with a fostex biodynamic variant, I have an E-MU teak with Lawton Purpleheart cups on their way so I can give you a bit of an idea of what purpleheart variants sound like when I get them (although the lawton cups take them to another level).
I’d suggest looking at @WaveTheory 's review of his purpleheart th-x00s to see what you can get with these fostex biodynamic headphones.
I think that the refurbished variants on drop are actually at a pretty good price too considering the TR (detachable cable) variants tend to have a price premium and are usually around that price or more used.