With the "old stock" Thermo gone and new ones factory-marred, I am exploring the alternatives... do you have any personal favorites, or are they all the same to you? What do you like or dislike in a tank valve for sidemount?
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The modular valves hold my bungee a little better than the regular valves. On most dives the regular valves work fine as well, I have had only a few instances where my bungee slipped off the valve. Usually when back rolling off a boat. No preference in brand.
It depends on how you run your bungees. I use loop bungees and dive with my tank valve knob horizontal and poiting out. I just loop the bungee over the valve handle so for me it doesn't matter whether the valves are modular or the regular L/ R standard valves. So without knowing your setup it coul or could not make a difference.
I had modular valves on my LP 85's and didn't like em. I also use loop bungees and just loop the handle.