+1 to Ken's comments,
I have the older RRS Carbon, early 2012 model, and love it. Twist lock on the legs can be a bit tricky, in that I have over tightened them and cracked the spacer. RRS took care of that.
It's also a reminder, if you use the RRS or Gitzo in water, there are no drain holes, so make sure you take the tripod apart at some time and let the water drain out. This is very easy to
do with the RRS units.