They all will eventually have issues with leg locks if used in severe enough conditions. A lot obviously has to do with how you care for them, the materials used, but also the ability of each carbon leg to be a consistent diameter, smooth, and the wiper quality.
If your strive to save a few $$ like anything you should ask yourself, where might you use the tripod, how much, and
what does a failure cost? We have been using them for some time first hunting and then later in matches, but the main use for me has always been Western hunting. Conditions range from the talcum power dirt to snow. The tripods are almost always exposed to the elements as they are strapped to the outside of our packs.
This year's elk hunts were unbelievably hot so what was normally snow was not. Nevertheless, once again shots presented themselves where only a tripod was the proper solution. I'm laying down spotting through a loop in a pinyon tree. If you look at the angles of my binos you can imagine even a super tall bipod would not work and see that this shot setup is completely dependant on the tripod (the shot too far for sticks). While it was cold, this area would normally be snow-covered; the point is to imagine spending gobs of money to get to your hunt, then days spotting, packing, and then having the tripod fail.
During this hunt, we had two guys on RRS, two on leofotto, and one on Feisol. Nothing failed, but my RRS has certainly seen a bunch of hunts and I don't question it; it is worth the extra $ to me. Antidotal as it might be, over the years I have seen a lot of tripod leg locks fail, but only one has been an RRS and that looked to be an mfg issue that was quickly corrected.
Either way and whatever tripod you use, if you see the legs starting to get dull or look like they are getting roughed up from the wipers, you probably should clean it more/sooner, but also disassemble and look at replacing the spacers, locks, and wipers if a failure is not something you want to deal with after packing in.