Also there's some rendering effects which Bryce has permanently fixed as a default on, where those other programs allow you to turn them on and off as needed. Some settings if enabled in those programs can make them just as slow as Bryce. Yet another thing to consider. Also the simplicity and rendering ability of Bryce is hard to beat considering it's usually priced under $100. What it does isn't bad considering it's close to costing 1/10 of the other programs you've mentioned. (That's after they cut their prices.) As for Bryce animation - yeah it's pretty much limited to linear stuff. No physics, morphing, bones, etc. Those are things Brycers are hoping for if 6 ever comes out. As far as commercial use goes - Bryce is good for still scenes and general illustration. It has a short learning curve which can aid production - well at least for small studios with limited training budgets. And some of the basic animation Bryce does can be implemented into web design with the use of other software (saved .bmp sequences work in Flash quite well). If you plan on doing full out animation with effects, etc. - then Bryce still isn't what you're looking for. If that's the case, it might be better to go with Cinema 4D, Maya, LW, XSI, etc.

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Barbequed Pixels?

Your friendly neighborhood Wings3D nut.
Also feel free to browse my freebies at ShareCG.
There might be something worth downloading.