Hi there
I'm no expert on Reflex technology, but this guy is:-
http://www.ojovolador.com/eng/read/inte ... /index.htm
In a nutshell though, reflex kicks up the rear of the wing, the speedbar pulls down the front of the wing.
The pilot action required in response to turbulence is different with the two designs.
With a reflex wing, activate the reflex profile by extending the trimmers and take the hands from the brakes.
With a conventional design like the Arcus, get off the speedbar and use the brakes to control the ptich of the wing to keep it over your head.
This is termed active piloting. However. as a learner, I'd avoid conditions that require this.
I must admit I still get the Arcus out for a fly now and then.
For cross country the Revo is the biz, but the Arcus is a lot of fun for floating around and thermalling.
Cheers
Steve