Fiio/Jade Audio JT1 should at least be on the list for consideration.
It has a slightly weird tonal response, but a clear bass-shelf that's about 4-8dB louder than the rest of the sound.
It has a suspension strap, which is almost always the most comfortable type of headband, and the ear pads are VERY squishy.
I reviewed it last week, so you could also check that out for more info (oh head-fi or YouTube).
The only 2 main negative points about this headphone are:
• No cup rotation - so comfort is not guaranteed (wasn't a problem for me)
• Objectively weird signature is not for everyone (but can also add some exaggerated 'fun')
Also some people might disagree about it's 'basshead' status as it is only a little bassier than headphones like BeyerdynamicDT770 and SoundMagic HP100 ¯\_(ツ)_/¯