I predominantly use Really Right Stuff (RRS) tripods, ballheads and bases. RRS gear costs more, but is well worth it in my opinion. Their equipment is built to last. I easily expect 10 years out of my current tripods and ballheads, maybe more.
Really Right Stuff TVC-34L
RRS tripods are built to last. The twist locks are smooth, the legs are sturdy, and for its size the 34L is light. This is my go-to set of legs paired with the BH-55 ballhead. Read my RSS review for more details.
Really Right Stuff TA-3 Leveling Base
I added a leveling base to my TVC-34L as my interest in panoramic photography grew. Setting up for panos is so much easier with the leveling base. Watch this video for my explanation of leveling bases.
Really Right Stuff L-Plate
Platypod Ultra
(Amazon)
The slim footprint of the Platypod Ultra is amazing. I use this with my A6000 or RX0 to capture behind the scenes video. See other ways I am using Platypods in my photography. I also recommend picking up the accessory kit.
Platypod Max
(Amazon)
I use Platypods on scouting trips and for capturing additional video angles from field shoots. The Max is plenty sturdy for my full frame bodies and large lenses. See how I am using Platypods in my photography for more ways to use Platypods.