The only heritage speaker I have heard is the Klipschhorn and they are big bold and have a sense of live scale. The Reference speakers are the slim line designed speakers that are less efficient and boxier sounding and possess a nasal quality to them - but I find that from most slim boxes like this. The Reference standmounts have less box and thus less interference. I like them at the price mind you and think they get overlooked because largely they sell in low-fi shops - in Canada they sell at London Drugs which is unfortunate because they're typically mated to receivers and lines up beside 10 other speakers with a switch box.

The K-Horn has a big live scale sound far more dynamic and largely free of the box. Some complain about the treble but so it goes with any horn. I think that can be compensated for with good electronics - horns tend to show up limitations.

I know some folks like the LaScalla and others better than the K-Horn - they may be right Have not heard them so I can't say.

Still I would probably lean to the Tannoy Prestige series since they're in the same price class offer similar live scale sound - and generally sound smoother - but they cost more.