It is also difficult to break that concept down, what is "best of" depends on what you consider "important" as far as defining that definition. Marble Blast Ultra is made with Torque3d, and while not a "visually stunning" game, is a great game, fun to play and executed well. I even bought it because I love marble madness type games and this one was challenging, fun and worth playing, it has simple graphics however. Even some of the older demos look good in my opinion, and some of the free mission maps look good even if not complete games. Nils Deadly Matter project (RIP), and his new project look good and those are on DX9 and older now.
When you say "best of" are you talking about just straight eye candy and comparisons to x,y engine features? Or the gameplay itself? Or do you mean overall game experience? In my opinion as I have said before I believe the gameplay and its execution itself is the most important thing to consider when looking at games. I think that trumps fancy graphics any day. Others might focus on the artwork, graphics, and what the engine can accomplish in that arena. It is an interesting subject. There are other games DUION did not mention that have been made with the torque engine over the years.
Discussion about what defines "best of" aside, it would be nice to see a list that is easily seen.