I now have three good weekends of riding on the new build and am very satisfied with the frame. You really can't knock the quality and numbers of Flyxii for the price at $280. As someone mentioned to me at the trail head, "At those prices, you can buy several others if you break it." I am not a fan of the thought of breaking a frame, but suppose it is true. In any case this will fit the bill until I can update to rear suspension and a though axle versus quick release in a few years.
The overall ride of the frame on the trail is very good in comparison to my last two aluminum hardtails. It is very compliant and has a velvet smooth ride with a dead quiet presence. So far, I am amazed at how fast it rolls on the flats compared to my last frame with the exact same tires and wheelset... almost night and day difference!
There is one sensation that I am not a fan of though and that is what seems to be an ever so slight bit of noodle effect in the top tube or later stiffness. It is really only noticeable when seated and leveraging on the bars side to side on a grippy surface. My initial thought is that it may possibly be the result of more leverage from a 60mm wider bar over my last build. In any case, you have to be intentional to notice it, so I will just try to avoid doing that.
So far, I am a carbon convert and don't see myself purchasing a big name brand anytime soon. For the curious, the top tube reads "wandering."