These are restaurants I have personally visited and believe to be of high to excellent quality.
Sushi:
Kata Robata - Greenway Plaza
MF Sushi - Museum District
Sushi Tora - Washington Ave
Soma - Washington Ave
Latin-American:
Latin Bites - Memorial
Cafe Andes - East Downtown
El Real - Montrose
El Big Bad - Downtown
Hugos - Montrose
El Tiempo - Greenway Plaza
El Sinaloense - Baytown
Tampico - Airline
Emma's Mexican Grill - Pearland
Sylvia's Enchilada Kitchen - Katy
American:
Moon Tower Inn - East Downtown
Hubcap Grill - Downtown, Kemah
Underbelly - Montrose
Hay Merchant - Montrose
Christian's Tailgate
Lankford Grocery
Stanton City Bites
Ray's BBQ Shack - University of Houston
Onion Creek - Heights
Treebeards - Downtown
Reef - Downtown
Little Bigs - Museum District
Sammy's Wildgame Grill - Washington Ave
Pi Pizza - Washington Ave
Pinks Pizza - Midtown
Beavers - Washington Ave
BB's Cafe - Montrose
Hobbit Cafe - Greenway Plaza
The Breakfast Klub - Midtown
Barnaby's - Downtown and other locations
Gilhooleys - San Leon
Tookies Seafood - Seabrook
Tookies Burgers - Seabrook
Killens BBQ - Pearland
Killens Steakhouse - Pearland
Corkscrew BBQ - Woodlands
Sandwich King (philly cheesesteaks) - Long Point Dr
Antoninis (philly cheesesteaks) - Webster, Texas City
Stomps - Bacliffe
Connies Seafood - Pasadena
Asian:
Ramen Tatsuya - Montrose
Doozo's Dumplings - Downtown
Black Smith - Montrose
Cafe TH - East Downtown
Pho Saigon - Downtown
Huyhns - East Downtown
Les Givrals - Washington Ave
Dak and Bop - Museum District
Fat Bao - Greenway Plaza
Mala Sichuan - Bellaire, Montrose
Peking Cuisine - Bellaire
FuFu - Bellaire
Pho Dien - Bellaire
Don's Cafe - Bellaire
Pho Binh Trailer - South Houston
Other:
Conservatory - Downtown
Local Foods - Downtown
DeMarcos - Montrose
Raggae Hut - East Downtown
Melange Creperie - Downtown/Conservatory
Niko Niko - Downtown
Spaghetti Western - Washington Ave
Empire Cafe - Montrose
London Sizzler - British Indian - Sharpstown
Mezza - Mediterranean - West Galleria
Restaurants I've visited from Alison Cook's Top 100 2017:
Xochi
Kata Robata
Hugos
Killens BBQ
Mala Sichuan
MF Sushi
Uchi
Da Marco
Killens Steakhouse
Andes Cafe
Bernie's Burger Bus
Breakfast Klub
Cafe TH
Cork Screw
Frenchy's Chicken
Gatlin's BBQ
Hubcap Grill
Huynh Restaurant
Latin Bites
Local Foods
Melange Creperie
Original Ninfas on Navigation
Pho Binh Trailer
Reef
Revival Market
Sylvia's Enchilada Kitchen