Everything Patrick_210 said about Carrara's landscape capabilities is true IMO. You can also animate everything in that landscape! With a combination of Carrara's advanced particles and animated displacement maps, you can have streams, rivers, and waterfalls rushing through your scenes. The Anything Grows plug-in from DGC allows you to make animated grass using the "wiggle" function. You can also add flying flocks of birds with the native importer. And all of this is available in the standard version of Carrara5! I also am a long-time Bryce user and hold this app in affectionate regard. Hopefully some of Carrara's technology will 'trickle down" to Bryce and give current and future users new and exciting capabilties.