On a whim in the hobby shop, I picked up an Ember 2, got a good deal on it, otherwise I probably would not have been interested. However, having owned a Vapor and having really enjoyed its slow flight characteristics and easy fly attitude, I had a feeling the Ember 2 would be similar.
If you've flown a Vapor, the Ember 2 feels right at home, it doesn't fly exactly the same, but its comparable. I'm having more fun with the Ember 2, than I had with my Vapor. Turns out, the Vapor I had started to act up after several month and the linear servos would get really twitchy during flight. I have a feeling it was a problem on the brick somewhere, but it was being manifest through excessive servo movement.
I've had the Ember 2 for three months now, and it hasn't given me any problems. Flight times are in excess of 10 minutes with a 150 mah battery. Touch and goes are fun with this plane, but it's so light you have to carry quite a bit of power otherwise it will quickly stop after a touch... I don't think I've ever looped the plane, nor have I rolled it. I suppose given the right conditions and with some coaxing it'd be capable of a loop, and a rudder roll but the roll would be ugly.
On my DX7s have have both the right and left sticks set to control the rudder, and then I fly it like any other four channel. Also, this plane was a RTF, so I got a E-Tomic transmitter with it, I've used it several times, and while it's not much of a radio, it is pretty effective for the ultra micro line.
If you can get a deal on one, it'd be worth picking it up.