Hi all! I live on the Upper West Side, and want to have dinner with 6 friends (who mostly live up here too) on a Saturday night, with good guacamole, good entrees, and good margaritas. Any suggestions for a good Mexican dinner for a group of people? Rosa Mexicano in Lincoln Center has always seemed to me to have mediocre food (aside from the guac). Cafe Frida is ok. What about Toloache in the 50s? Thanks!