I have just returned from the tyre fitters having replaced my Michelin Exalto 205-45-17.
FNS = Legal limit, FOS = 2.5mm and both rears still have 6mm (now in garage as spares).
These had done 10k miles including 5 track days where I am a push them pretty much to the limit.
At £110 + vat per corner I reckon they represent very good vfm and unlike the Toyo offer a very good level of grip in the wet.
IMHO of course.