Hillebrand, my first tripod was a Bilora, and as I can see from their site, it was one of the amateur range. A colleague of mine uses a similar Bilora, a few times a year, and only at work (in a laboratory, so no rough conditions). Based on the experience of those two tripods, what I can say is, if you need a tripod that can dance the twist or the limbo, it is definitely a Bilora you need. When set to it's highest position (about 1,5m) it is possible to move the head for at least 10cm in each direction. I throw mine away because I didn't even want to put my flashlight on it. It is the worst tripod I ever saw.
On their site, I also looked at the 'professional' range, but in fact these tripods are all Gitzo tripods (and Gitzo heads). You might then as well buy a Gitzo