Tripods are a bit like lenses. Wide angle, normal, tele and super tele. Tripods are small, medium, large and X-large.
As I have stated a number of times on CR, I have wasted a lot of money on my journey to what I have today. It would have been a lot cheaper to go for the right stuff to begin with.
Today I have 4 tripods and 5 heads ( not counting monopods and heads for that). That is not one too many, because I use them all.
For very light travel I have the Gitzo GK1580TQR5, with a RRS BH-20 head. Very small, very compact and when I weight it down, it can support up to 70-200 f2.8L on a 5DIII body. No wind though and it looks like it could break any minute.
On the other end of the scale I have a RRS TVC-34L, where I alternate a BH-55 ballhead and a PG-02 LLR side kick.
And in between I have two others.
If I had to choose just one, it would have been the TVC-34L/BH-55 combo, because it can do everything, at the cost of size and weight.
The only advice I can give is go to a store and hold them in your hands, mount your camera and lens on it, think critcally through your use and go for the most stable you will be willing to carry and the best quality you can afford. Tripods purchases are not easy to do as a theoretical exercise on the web.