Well, I've had time to fly the Brio a lot, I think about 250 to 300 flights so far since Spring between the Brio and the Focus.
The Brio presents better. The profile is large, but it does not fly like a kite, if you know what I mean. Its balanced pretty well aerodynamically. The speed is slower and more constant on the downlines. This is particularly important on the humpty bump from the top as well as outside loops, and things like cuban eights.
The Brio requires (demands) less rudder correction. However, it takes some getting used to. When flew the Focus after practicing on the Brio for several weeks, I found it difficult to keep the wings level- because of the sight picture of the wings with respect to the fuselage. It only took a few flights to get back used to the Focus, but for comparisons, I went back to the Brio.
The Brio has a lot more lift in the fuselage, and the rolls tend to be more axial, with less rudder input needed. I have reduced my rudder expo from 90 down to about 80 or 85. It gives the same feel for rudder input as the Focus, but not enough deflection to get into the "elbow" of the expo curve. Its a different kind of wind correction. Flying the Focus in a strong crosswind, I'd keep some opposite rudder in (opposite to the wind correction angle, basically to straighten the fuselage). This rudder put the plane into an "ever present slip" where the plane would give the illusion that it was flying in no wind at all. The Brio does not work that way. It likes to be guided into the wind on the lines, at a more natural crab angle. At first I had the impression that the Focus handled better in the wind, but after going back to the Focus, then back to the Brio, I realized that the Brio actually had less workload, because it did not require rudder like the Focus did. Well, you asked for my thoughts- there they are!
By the way, rudder mixing- I have some up elevator with left rudder, and some opposite aileron with right rudder... and yes, I did put the traditional 3 turns (1/8 inch at trailing edge) of negative incidene in the left wing panel. The airplane locks much better with this at all airspeeds. Call it the "Szczur Incidence setup". Every plane I've flown flies better with this incidence setup.
I will see if sometime by the end of the year, or if you see me at the NATS, I'll download my 10X my setup. So far I've flown 3 different Brio's and they all fly pretty much identically.