These are just my impressions - take them as you will

Auran Jet - will likely be a good engine, but it''s fairly complicated to figure out quickly and there''s not much in the way of documentation on it yet. I''m watching this one as one to check out down the road.

Panard Vision - haven''t used

Crystal Space - I''d love to try this one out, but every single version I try will not compile for me. And repeated posts to the mailing lists haven''t solved the problem. It''s gotta be something I''m doing wrong, because lots of other people can get it, but I''m stuck.

Never heard of jtgame.

Power Render - the best choice from your list IMO, but I wish the terrains you can make were bigger. Other than that, plus needing a few more examples, it''s a good engine.

One engine that''s not on your list and is worth considering is the Torque engine. It''s only $100 and is the engine that Tribes 2 was built with. It''s pretty mission-oriented, but full source code to the engine is included with that $100 so you can change that. It has good terrain support and an active forum of people helping each other with problems (similar to this one). You can check it out at www.garagegames.com.

There''s also Genesis, which is being re-written as Destiny3D. It should be a good one when it comes out. Genesis was ok, but was restricted to indoors-fps type levels pretty much in my experience. The updated version will have lots of terrain support and supposedly will be much easier to work with. Check it out at www.destiny3d.com, but to see much of the site, you gotta pay a fee

Personally, I''m down to Torque and Power Render as the two engines that I''m seriously working with, but I haven''t gotten too far with either one yet - just haven''t had the time.

Hope that helps!