I bought Heliade (3-driver) model from Upscale Audio. Good deal at $699.00. Clean fresh sound , incredible imaging .Tweeter might sound metallic sometimes on bad passages or bad recordings. Bass is dry and insufficient (I usually hate bass), but this bass is weak not in extension but in color, character of the bas. Micro dynamics and detail retrieval is great. Play really well at low volumes as oppose to my ATC 12s.
Overall Triangle provides very engaging sound for very little money.
Speakers are all man made materials , I have heard that they changed that and cover their basic speakers with wood veneer now.
Now that i owned them for a few weeks I can say (for those who might be curious) that upgrade from Triangle while staying in the same sound signature would be the De Vore speakers.