I have 3 different brands of CF shafts on various cues. And I will put them in order of which I like the best:
1) Cuetec Cynergy 12.5 mm $400
2) Rhino 12.8 mm $180
3) Rouge/Pechauer 12.4 mm $490
I am an intermediate player, so I go more by how it feels in my bridge hand and my ability to pot balls with. I can't gauge deflection very well but the Cuetec seems to accomplish all I want it to do, plus is comfortable while doing it, and I shoot well with it. The Rhino is a very close second, maybe even tied with the Cuetec , but the Cuetec just feels ever so slightly better in my hands for some odd reason. The Rogue comes in close to the others but I seem to have problems shooting consistently with it sometimes, and it is very slick in my bridge hand to a point that I don't have the same feel as the other two shafts. Strange that it is the most expensive of the three by far, but that is how it works out with me. If I had it to do over again, I would have purchased a wood shaft with the Pechauer then put a rhino cf on it, and could have saved some cash.