Vue drastically evolved over the last 3-4 years. That's one reason why so many VFX companies start picking it up. Coming from terragen i never thought i would go with vue... since i tried it on version 3 or so. It was buggy as hell and i wasn't able to connect with it. Later i came to terragens limitations when it came to realizing my ideas. Vue was at version 6 by then and offered so much more possibilities and freedom. Now i stood with vue instead of going back to terragen 2.