"listen to a well setup Reference speaker, and a listen to the Heritage, then decide for yourself"
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That's the real problem! In my area I can't find Heresy or other Klipsch speakers to test than reference series. I've listen RF-3 mkII and I was more than surprised by the sound before to see what kind of speakers was playing.
I like very much the "live" atmosophere. I own now JM-lab Focal Chorus 714s cosidered very good speakers for quality/price ratio, but....... BUT.... are too smooth, too "natural", too flat. No emotions, nothing more than music from a speaker (I really sorry if I can't explain in english what I mean but I'm sure you're understanding...) and my ampli is not what you can call lazy or smooth (NAD C370).
I don't want to sell the JM Lab but since I've listen RF-3 I was looking for something that could play the same emotions, as high as low volume. On the italian web i find only RF15, RF25 and RF35 new at 500, 850 and 1039 euros but I've never listened and I can't know differences between that speakers. I've never listend Heresy, Klipschorn or any Klipsch speaker and than I asked in a Klipsch forum in order to know what Klipsch owners can say about it. I know that speakers are a subjective choice but if you understand what I'm looking for in a speaker after good impact from a RF-3 I suppose you can suggest me if an Heresy II could give the same sound or if would be better shift my attention to reference series as RF35 or RF25 (RF7 is a "must" but for budget and room's space I really can't consider it).
Anyway, I'm still looking in the real world for listening and test a loud speaker before buy it, but in the same time if I find a real special offer in EBay auction I would be ready to take it without risk to get loudspeakers at home worse than I already own.
Thanks a lot for your kind and wise suggestion, sorry for the too long message and all the best.
Federico