Both the Stinger and AJ-2 take off great. The Stinger needs less rudder during take off. About 3/8" is needed for Stinger vs. about 1/2" for AJ-2.

In the air the AJ-2 and Stinger fly similar. The both track well and handle wind well.

Both models are easy to get into a smooth rhythm around the pylons. The Stinger seems to knife edge better.

As far as speed, they are both fast.

The Stinger has a thicker wing tip by percentage of the cord, but it also has a elliptical tip. Both seem to be a clean design.

I think that these two models will fly about the same speed, especially if the 9" x 6" APC is the propeller.

Both these models glide extremely well. There is a learning curve to landing these.