Summary: I wrote a negative review of the 190XB legs as too short, light, and delicate for my 85mm Zeiss scope. So this is the corollary review: I used the twist lock version of these legs for years and now have returned to this, the cam lock version. I have the setup in a tripack, and it is fabulous. Stable, indestructible, easy to use.
Summary: I purchased the Manfrotto 055 XB Tripod legs as a gift. I have used the product so knew it was good. The main reason I bought it from Eagle Optics, is because in my opinion, they have the best service of any company with which I have done business.
Summary: The legs are good.Probably not as good as the Carbon Fiber ones, but a lot more affordable.It gets to be a little heavy carrying the spotting scope attached to the legs. Ok if you're carrying it just for a short distance.
Summary: This tripod is a bit of a pain to carry around, but it's worth it, considering the superior stability they offer. The only time I've experienced shaking while using these legs was when I lowered the legs down so my brother (5'10" maybe)could look through my scope and then raised the center column to my height (6'10") in heavy wind. I also appreciate how easy they are to use, with the quick lock, grips, and multiple hooks.
Summary: At Mike's recommendation at Eagle Optics, we bought these to support the Vortex 85mm scope. Before they arrived, I used my lightweight camera tripod - almost unusable, especially with any wind. The Manfrotto legs are very stable, easily adjusted, and I like the little bells and whistles - a hook to hang weight, pads on two legs, etc. They are on the heavy side (but we bird mostly by car or bike).
Summary: This is a big, solid, reliable, and extremely well-made tripod. The leg locks are the best I've seen: smooth and secure. It should be tall enough for anyone, even using a straight spotting scope. I'm 5'9" and with an angled scope I don't extend the center post at all, and don't even fully extend the legs. It is BIG. With a head on it, it is also LONG, but (for me at least) not too heavy to carry around.
Summary: The 055 XB tripod legs are simply fantastic. It is tough and sturdy, and the quick-locking leg locks work like a charm for standing the tripod up quickly. The soft leg grips are excellent for cold-weather and for resting on a shoulder while the tripod is being carried. Really recommend if you're looking for a well-crafted tripod that can hold a full-sized scope and still maintain stability.