All IMO and pardon the generalities svp...
Heresies are inherently limited. They don't dig deep, and they require floor placement in order to dig as deep as they do, which forces the sound stage to present from down at your knees. If you raise them up on stands for improved imaging they require further taming of the highs in order to avoid a strident tonal balance. Heresies w/ subs have the potential to kick major butt but require some dialing in.
Go listen to the Heresies, but keep an eye on the used market to see what else is out there. Forte II are my faves among their old monkey coffin style models, with honorable mention to first generation CF-4.
And good luck. A Klipsch hunt requires some luck and patience.