J.S.
I'm familiar with McKinney mainly, so here are my suggestions:
Italian: Amatos (Stonebridge Dr. & Virginia Pkwy in Albertson's parking lot)
French: Marry's Bistro (Eldorado and Lake Forest)
All around: Goodhues (off the square downtown)
Ricks' Steakhouse (off the square downtown)
A couple of places in Plano:
Jaspers (Parks @ legacy next to the Angelica)
Zea's (Tollway and 121 next to Blue Mesa)
Hope that helps!