At last years Santos FTF, Barbara demoed 3 or 4 bikes before her Uber-V came back from the shop. Of everything she rode, the GF HiFi 29er was her favorite BY FAR. I must admit to being impressed with it as well.
I think she even liked it more than the Uber-V, but just didn't want to tell me so. Of course, the last incarnation of the Uber-V was too small for her so maybe the new one will change her mind.