This is the second carbon fibre bow that I've owned, and the first one I've had from Thomann. I must say, I'm very happy with it overall - the fit and finish is good overall, it feels good in the hand and on the string. A good bow for the beginner to intermediate player (I'd put myself in intermediate), and a decent, durable back up for advanced players.
Only drawback that I can see is that the hair used on the bow is cello/violin hair, and therefore not quite coarse/grippy enough for double bass. I've got through two classical concerts with it so far and just using lots of rosin, but I will be getting it rehaired at the first available opportunity with some darker, coarser, double bass hair. I'd be giving a 5* review if it wasn't for this slight issue.
T