Depends on which signature you are looking for. Argons are some of the best modification and you can just grab those from modhouse directly if you wished but they have a real long time to obtain them. If you wanted a V signature dekoni blues are great.
Unfortunately, I don’t have a wide variety of recommendations for it you’d have to dig up some mods people use like the comfort straps and pad swaps. You can find them in it’s respective forum typically though 🔶 Fostex T50rp which your more than welcome to also ask what people like for their modifications too there.
They do tend to have quite a bass presence and rumble making them fairly not very ideal in a competitive sense without a fairly more specific set of modifications.
It’s a mod conversion to make it use a balanced cabling of which you will need an amp with a balanced cable plug to make use of it. makes the headphone sound better