I haven't used Toyos or the Coopers, so I cannot comment on them...
My first set of 19.5's were Michelin XDE's. They still had plenty of tread left when I replaced them at ~75k miles, however I was never really satisfied with them; The first couple I bought were replaced (under warranty) due to excessive road force, they took a lot of lead to balance, they had terrible tread squirm when they were new, and they were way too loud on the highway.
A year and a half ago I put on Bridgestone M729F's and drove from California to Maine and back with zero issues. The ride is smooth and vibration free, handling is great in all conditions, and for an M&S rated tire they don't sing too bad on the highway. Unless something better comes along, I'll be buying these again... if I manage to wear out this set.
Cheers,
-Mark
