I would like to know if anyone has had experience with this motor and how powerfull is it? From what have I seen with other duratrax motors they are fairly reliable and easy to tune and stay tuned.So any comments and suggestions are welcome.

I was going through an Axis at the store I work at part-time yesterday and it had the Torq .21. I have to say that I was fairly impressed by the engine. It looked like it was well built and it turned over easily once I set the needles back from where the customer had them (which was why he couldn't get it to start). I tok it out for a test spin in our back lot and the thing absolutely flew. I don't agree with you about the rest of the Torq series of engines, but the .21 seems to be a decent nitro engine.

The Torq21 has been very very good to me
It is reliable easy to tune and start. Doesnt seem to run "hot" at all. I have 3 1/2 gallons so far. I hardly ever adjust the settings. It gets my Quake going rather fast too with stock gearing.

The Torq 21 is a real powerhouse. My Nitro Demon hauls booty and I have only run 10% through it so far.

I am convinced the Torq 21 is in reality an OFNA Force 4

Just put one in my Maxx. I had problems at first, I think I played too much with the needles. But now it runs just fine. I am beginning to like it. hopefully it will be fully broken in by tomorrow.