None. TMAO is death for men, all research from every single source shows the same evidence. My health has improved ten fold since cutting out beef. I eat 8 oz chicken and 4 oz turkey per day, plus salmon up to twice a week.

However, when I did eat beef, my favorite ways are all what would be considered well done. Barbacoa, brisket, fajitas, gyudon, and pot roast. They are still tender like more rare cuts but all the flavor and stomach ease of well done.

I like well done too, it is not a crime. If you like char and texture it is the way to go, plus it will never make you sick. Plenty of people have sensitive stomachs and can't digest rare well. Plus the extra cooking really brings out spices and seasonings. Carne asada is divine and that is well done.