I would say that I am relatively neutral on them...and in fact miss the Forte's occasionally, when listening to certain music. The Heresy's? Not so much......
... narrowing down his speaker selection based on suggestions driven by HIS preferences, then doing some serious listening (demos/trials).
Similarly, where in the thread has anyone suggested that Klipsch-lovers are buffoons?.
I've been told Forts have more range than Heresy, I haven't heard them in 35+ years in the showroom when I purchased the LaScalas instead of the K-Horns because they were more flexible and portable from move to move. The Forte's didn't have the market success of the Heresy and are harder to find, price I'm not sure, the Heresy's are manufactured today, so they are "modern speakers"...... 40+ years of market success in a highly competitive space where so many others failed and gone out of business.
We have the room dimensions, his preferences, his budget and the existing gear which could easily drive the Heresy's. I agree with the post stating his speakers don't have the muscle for the music he listens to.
KC the clear intent of your post was to poison Klipsch speakers which is dismissive of their long term market success in homes and theaters and by extension those who bought them. You could have just as easily stated that you had a pair and like the XXXX speakers better which are inside of the budget range. Now that I know he's in the UK, KEF had some competitive speakers when I heard them last.
My suggestions were get studio headphones and try to isolate the point at which you don't like the sound. Try component swapping, which if you buy used you can always sell the non keeper and continue looking. And finally buy widely accepted and recognized used gear which can be resold for what was paid months or even years later. In the used gear market, nothing is more under-priced than high end surround amps that don't have HDMI interfaces. He did express an interest in a Vintage amp, 1998 may be one mans Vintage and it may be more expensive and unnecessary to go all the way back to the early 1980s for an amp with some muscle, like 110Wrms + good specs.
In short, my suggestions fit his budget, room size and preferences and gets him gear that specs out against anything on the market, and if not the keeper gear can be resold for what he paid. In fact, he could AB vs his existing system and mix components.
Trashing the competition is poor salesmanship IMHO and the opinion of the customers I met with worldwide.
Given that we have all of the requirements, what are your recommendations?