Speakers for 300B --- Klipsch Heresy 4 or other ideas???

I have heard the Elekit 300b and I think it is a very nice sounding amp, particularly for the money.  I have not heard any of the speakers you are considering with that amp, or for that matter, any other single-ended 300b amp.  

Heresy and the Zu are quite different sounding speakers.  I find the Zu speakers to be very dynamic an exciting, but they are also somewhat lean in the upper bass region, and somewhat hard and brittle sounding (excessively "crisp").  It is tempting to think that the Elekit is the exact opposite so that they may complement each other, but, that is not often the case--usually speakers of a certain sound actually go better with amplifiers of the same kind of sound.  

I like the sound of the Heresy, Forte and Cornwall and I suspect they are a safer recommendation than the Zu.  They do have some of the tonal colorations common to most horn-type systems (peak in the upper midrange, a tendency to "shout" at higher volume levels, somewhat weak in very deep bass), but, horn systems that ameliorate these issues better are typically MUCH more expensive.

High efficiency speakers that go well with a single-ended 300b amp tend to be somewhat pricey, so you might consider looking for something used.  

Ozzy62,

Yes I have heard the whole line a few times. Both my local dealers carry most of the line. 
I did 3 demos with the Cornwall IV at two different dealers. One demo with the Forte IV (and one with the forte iii). Heard the  current La Scala in the same room as the Cornwall IV for a few songs (I cut the demo short due to not liking them). One demo with the Hersey. 

The Cronwall IV is the best of the bunch and the only one I could see myself owning. The lack of bass in the Hersey and La Scala is a complete deal breaker.

 Buyers should listen to these. They get a lot of unjustified phrase imo. They have some real issues that can be heard. I would love to see measurements of the Cornwall IV. I feel like the sound stage shifts around at different frequencies and I think this could be seen in dispersion measurements.  
With all those negative statements I can see why some people like them. They are different and have some good attributes but I would not buy them based on internet reviews/opinions. Give them a demo. 

@james633 Thanks for sharing. So many people come on here and bash klipsch without either

a) having heard ANY klipsch speaker
b) having heard the exact model in question

So it's refreshing that you have and I respect your opinion.

Oz

Ozzy62,

No worries and no klipsch hate from me. I follow the Klipsch threads and genuinely was interesting in buying the Cornwall. I decided to pass as I don’t think they fit well into my system (high powered McIntosh) and I did not like them well enough to work a system around them. 
But at $3000 I would not buy the Hersey. The horn design of the Cornwalls seems much better. 

Thats the great thing about this hobby, many different flavors to choose from .  

Tastes change. lifestyles change.....  good thing theres about 1000 different speakers to choose from