But the Sirui and Benro (I don't know about other brands) twist lock tripods can extend all the legs to max at one go right? Twist all the locks and pull will release all legs to max length right? With clip lock tripod, you can unlock all legs at one go, but you have to manually pull out the legs, they don't have a mechanism to extend the legs for you I think. At least mine doesn't.
No. Depend on how you do it. When all the legs are fully retracted, you can access to all the twist lock with one palm, twist it (you don't need to twist 360degree) just a slight twist of your wrist, and you release everything, then the leg will 'fall' downward using gravity pull. Less than 1 sec to release everything if you are used to it. Same for clip lock, one palm, three or four clips are open then let gravity do their job.
Simple.
About Sirui tripods.
E series tripods are all flip lock tripods
The rest are all twist locks
flip lock or twist lock is very much personal preference. I like twist locks because they are a lot easier to maintain in the long run. Flip locks usually have metal screws that will corrode in time if you submerge them in, say, sea water.
But in the end, it is really up to you. What you prefer. The best way to find out is to go down to a shop and try them out. You can check them out in TK foto in Funan, they are the distributor of Sirui.
Thanks. Most likely I will get the Sirui T-X series with the twist lock.