I would say that although Bryce is short on plants, you can make some good trees with B5 and you can download enough to get by... post-processing software such as Paint Shop Pro or Photoshop ( if you want to spend the money ) is good for extra effects - you can see these best in the mixed medium gallery I think ;) And models, well, you can download so many that unless you are really very fussy you will find what you are looking for...... And since this is my new passion, Terragen is FREE ! You do not need a registered version to get great landscapes and with a bit of work you can add objects/planets/effects with post processing.....