I'm at ~100 psi now. I'll swap the tank out some time this week when it gets between 0-50 psi. EOTD (End Of Tank Dump) is not an issue--just run a low end pressure of 30-35psi. I ran an Azoo at ~45psi. Never had a problem, never an EOTD. I run them dry unless it's just more convevient to swap them out a bit earlier for some reason....
I Fear the EOTD...What do you do to prevent it?