I agree, the Forte IV sound excellent with music but I was blown away how great movies sound with the 4s and a sub. Honestly the Forte IV do not need a sub. I set my sub to 40 Hz, and its perfect.
Buy the Forte IV..... they are awesome speakers . To not buy a speaker because they are "unforgiving" is silly, to me that means they are revealing.... so what if some recordings are lackluster, they were to begin with.