Some everyday kinda joints:
+1 on Brents Deli
Las Fuentes for inexpensive and decent Mexican
Casa De Soria (from Ventura) just opened up on Sherman Way at Topanga. My Ventura friends like the Ventura location... A lot and are regulars.
I know you said west of the 405 but on Sepulveda in Van Nuys you have Sam Woo, Mercado Buenos Aires, and Phở 999.
My favorite Mexican place is also west (Edit: I meant east!) of 405, a ways in NoHo, but I would be remiss in not suggesting it: Salsa and Beer. The meat is smokey good and great crispy carnitas. Can get busy, hard to park at times, spend the day there eating and drinking margaritas!