The toughest tripod I have is my Benbo Baby tripod, which predates Patterson being involved. After paying for it in Australia, I picked it up at the Reutlingen post office on a trip to Germany around 36 years ago. If I remember correctly, it was unavailable in Australia at the time.
I also have acquired more Benbo tripods, a No. 1, No. 2 and the original Photo Trekker model. On all of them I run a 50mm ball joint, the Trekker model has a smaller ball joint. Somewhere I also have a Benbo mono-pod. All of these Benbo units have one extremely good feature, they are 100% snow, mud and waterproof up to their lower leg joint. For transport you can pull them apart into four pieces and place each leg and the camera arm in various parts of a backpack; which I did many times for air travel. You can also pull apart the bent bolt assembly to further distribute weight; can be tricky the first time you put it back together, but that is part of the fun of life.
One aspect I don't like about Benbo tripods, apart from my super strong Baby model which is as solid as a rock, they are iffy with heavy cameras on slippery floors. What happens, is that if you are on a linoleum or parquet floor, the strength required to super lock the bent bolt mechanism is super high to stop the legs very slowly spreading as they slide ever so minimally apart. If you can organise some kind of lower strap, chain or belt to stop the legs spreading, then they are beautiful.
These days with most of my photography being large format work, I almost exclusively use my Berlebach wooden tripod. The Benbo's are still pulled out for whenever I use anything else though. It is interesting to note that whenever there are others present who have never seen, heard or imagined the Benbo tripiod concept, get to use one of mine, they almost always have one identical question. "How much are they?" They are unbelievably versatile and allow one to photograph many things with ease that other tripods can do, but you may have to do some serious workaround practices to achieve.
Mick.