You have to know what you feel like doing, if modeling is your thing, then go with Lightwave, it has a great modeler, good rendering, particles, cloth dynamics, good texturing. It's a great all around app. I make all my Poser clothing with it. You have to learn it, but to model you are really going to use only 6 or 7 tools most of the time, the rest you learn as you need it, for the money it's a great buy. If all you are interested in is making pretty pictures of landscapes then Vue5 infinite ( or 6 by now) is the best choice, but as far as modeling... Too bad you missed the LW and Vue5infinite bundle that was an amazing deal that would have been perfect for you. In the end it depends on what you feel like doing the most and how much time you are willing to invest in it because no matter what app there is no "make art" button, you have to work at it.

Dominique Digital Cats Media