I think it depends on what task you want to use it for, and how much rugged abuse it needs to take.
Personally, for trekking outside with a heavy lens (for me, that's 70-200 2.8II + Extender, which is similar to 100-400... or 150-600 Sigma Contemporary, which is bigger and heavier), I like the Manfrotto 190Xpro with the column that can be swung 90 degrees. It takes a LOT of abuse, I'm a big snap-lock fan, and it is very sturdy without being excessively heavy for being full-size. I don't think any of the travel tripods (and I have/tried soooo many) are suitable for this size of lens from a sturdiness/confidence perspective. I'd use one if I had to, but I'd never walk away from the camera.
I use the 190XPro with the large Manfrotto arca-swiss ballhead (I can't recall the model, but it's about $275), because I find that the release/connect mechanism works well for heavy lenses. That, plus I can get a 70mm arca swiss plate with an optional L or T at the end, to make sure that the plate stays square to lens and also to the head.
However, if it doesn't need to take abuse, my favorite tripod, by far, is the Vanguard Alta Pro 263AT (the two letters at the end might stand for a bundled head, not sure). I love this tripod, and it's superior to practically every other tripod that I've used in every way except that the foam grips will not stand up to abuse, and the construction is less bulletproof than the Manfrotto. The design is awesome -- it's very sturdy, lighter than the Manfrotto, and you can angle the center column any way (which is not as useful with a big lens, but it's very useful generally). Also, a hidden gem, the center column has a very good, friction-controlled rotating collar. That means, you can leave the head's rotation locked, and rotate the whole center column.
This can be useful because the control is less in the way and easier to set to the right friction (or lock) and also because it allows you to attack a field monitor to the tripod post, and have the field monitor turn along with the camera.
Finally, when I bought it, I got the Alta Pro 263AT bundled with the matching 6-axis pan head for almost nothing extra (I think the bundle was about USD$150). It's an awesome pan head that works really well with big bodies and big lenses. If you don't have to worry about transporting it (because it's more awkward), the pan head is very nice for keeping your camera perfectly level, and for making accurate, tiny adjustments, even with heavier lenses.