I have the Gitzo GK1555T-82TQD. Great tripod, compact, lightweight and sturdy. Easily the best tripod I’ve ever owned. I believe Matt Granger uses the same tripod. I did own one of the bigger Gitzo systematic tripods before, but found that I never took it with me anywhere due to the size and weight.
I also have the Giottos VGRN 8225-5310-630 which is smaller and lighter, but less sturdy. Great for compact cameras.
If you just want the most expensive tripods, look at “Really Right Stuff” and “Arca Swiss” heads.