I have listened to Sota Sapphire and TechDas AFV in my system. I use a Kuzma 4P9 and my next table will most likely be a Kuzma Stabi R (on my Vibraplane) or a Galibier table. The TechDas is an amazing table. The vacuum and air bearing technology have been around for several decades so I wouldn’t worry about reliability.
I would focus more on the general sound of the table. The TechDas are very stable “smooth” sounding units that allow you to focus on the music. The Kuzma’s are thought to have a little more energy and excitement. I’m sure these are all modified by arm and cart choice as well.