These are my favorites but may be pricey for some of them.
Nopa on Divisadero and Hayes in san francisco $15.00
Joes Cable Car on Silver and Mission in san francisco $10.00
Joes on Geary in san francisco $ 6.00
Barney's in san francisco. $7-8
1/4 lb in Hayward $ 5-6
Mos Burger if you are in Japan or Hong Kong
Kua Aina in Chiba Japan at the mall or Hawaii
Fat Burger in LA area.
why I like these places. good, fresh, tasty, various burgers are good and good fries.