To have preference for a certain tool, he/she doesn't necessarily choose her/it as the best or one of the best. 
For me it is a love subject the first view, besides the: 
Easiness in the learning, 
Still to be one of the tools (amateurs) more used for construction of landscapes, 
A place where you can exercise your imagination without a lot of restrictions, 
Hundreds of thousands of examples and objects your disposition, 
A ton of tutoriais, 
The simplicity above all, 
A wonderful community (the other ones are also) that is always ready helping you, 
 
Besides everything, I think that Corel used of magic when it built Bryce, he causes an irresistible attraction. 
Bryce is a religion, and as such it cannot be discussed. 
 
DAZ should give continuity it is her marvel. 
 
Long life to Bryce.