The two different German teachers I have had have differing ideas about the correct conjugation of some verbs in the 2nd person plural, but I am not clear about which is "more correct" or when to use each form.
For example, ihr fahrt or ihr fährt? Ihr lauft or ihr läuft? Ihr schlaft or ihr schläft?
One teacher suggested that the former forms are more literary or formal, but is there a preference in everyday speech or writing? I would prefer my verbs not to be any more irregular than they absolutely must be.