My friend, you are not nuts you have been made aware of a different sound quality of speakers. The depth, height and technology of a speaker matters greatly. My suggestion for you would be to explore the Heritage models further. Something relative about the sound quality of the Klipsch made you stop and take notice, which was most likely the clarity of the highs and midrange drivers. However, the speakers you listed as replacements have lower hertz frequencies than the Klipsch you purchased, not to mention your klipsch project considerably lower from the ground. The Forte IV or the Cornwall would have you wondering for certain.
At this point, however, I cannot imagine you ever being satisfied with your listing space now that you have the knowledge and ear for more. So go for it and be satisfied.
All the best